Masimo Announces CE Marking of Rad-97™ Pulse CO-Oximeter® with Integrated NomoLine™ Capnography

Continuous Oxygenation and Ventilation Monitoring with Upgradeable rainbow® Parameters in a Compact, Standalone Device

Irvine, California – April 10, 2018 – Masimo (NASDAQ: MASI) announced today the CE marking of the Rad-97™ Pulse CO-Oximeter® with integrated NomoLine™ capnography. With this clearance, Rad-97 is now available both within and outside the United States in three configurations: Rad-97, Rad-97 with integrated noninvasive blood pressure, and now Rad-97 with NomoLine capnography. Rad-97 offers Masimo noninvasive and continuous monitoring, through Measure-through Motion and Low Perfusion™ SET® pulse oximetry, upgradeable rainbow® technology, and NomoLine capnography in a compact, standalone monitor that incorporates advanced customizability, connectivity, and device integration capabilities.

Masimo Rad-97 with NomoLine Capnography

Masimo Rad-97™ Pulse CO-Oximeter® with NomoLine™ Capnography

Rad-97 with NomoLine capnography features an integrated ISA™ CO2 module with NomoLine sampling lines for sidestream capnography, with an adapter for intubated patients – meeting continuous monitoring and capnography needs in a single device. Rad-97 with capnography displays continuous end-tidal carbon dioxide (EtCO2) values with numeric, trend, and waveform viewing options, as well as fractional concentration of inspired carbon dioxide (FiCO2) and respiration rate. With both integrated capnography and Masimo acoustic respiration rate (RRa®) available on a single device, clinicians have the flexibility of choosing the most appropriate respiration monitoring method for each patient.

Rad-97 combines its portable, compact form factor with a high-resolution, multi-touch color display that allows clinicians to easily customize the device for each monitoring use case – bringing rainbow SET™ measurements and capnography measurements to care areas where a small footprint or high portability is desired. Rad-97 features built-in enterprise WiFi capability, allowing it to connect wirelessly to supplemental patient monitoring systems including Masimo Patient SafetyNet™*, facilitating automatic data transfer to hospital electronic medical record (EMR) systems. The easy-to-use, intuitive interface helps to simplify charting workflows for vital sign monitoring and patient data capture.

"We're delighted to bring the full family of Rad-97 products to markets outside the United States," said Joe Kiani, Founder and CEO of Masimo. "We believe Rad-97, with its versatility and customizability, will play an especially important role in helping hospitals improve their monitoring capabilities with convenient, easy-to-use device and technology solutions – ultimately helping to improve patient care and safety."

Rad-97, Rad-97 with noninvasive blood pressure, and Rad-97 with NomoLine capnography have received FDA 510(k) clearance and are also available in the United States.

@MasimoInnovates || #Masimo

*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect® (MOC-9®) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7® wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at http://www2.masimo.com/evidence/featured-studies/feature/.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo Rad-97™ and NomoLine™. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo Rad-97 and NomoLine, contribute to positive clinical outcomes and patient safety; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Evan Lamb
Masimo
Phone: (949) 396-3376
Email: elamb@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

Masimo Announces UniView™

UniView Aggregates and Displays Patient Data From Multiple Devices to Minimize Clinician Cognitive Overload and Maximize Patient Safety

Irvine, California – April 2, 2018 – Masimo (NASDAQ: MASI) announced today the release of UniView™, an integrated display of real-time data and alarms from multiple Masimo and third-party devices, designed to reduce clinician cognitive overload and improve patient safety. UniView promotes data sharing and team coordination among multiple clinicians.

In operating rooms (ORs), in intensive care units (ICUs), and in other areas which involve multiple clinical disciplines, clinicians are often unable to simultaneously view data from all of the various medical devices in use, resulting in information that remains siloed among, for example, anesthesiologists, surgeons, and nurses. In addition, the plethora of displays and user interfaces adds to cognitive overload that can cause clinician burnout and suboptimal patient care.

Masimo UniView

Masimo UniView™

UniView solves these problems by bringing together data from a variety of sources – such as patient monitors, ventilators, anesthesia gas machines, and IV pumps – and providing a supplementary display for them, clearly organized, on one or more large, central monitors, so that all clinicians can simultaneously view and act upon the same, comprehensive real-time patient status and historical trends. Visual alarm indicators, relayed from the connected devices, help clinicians recognize patient distress and target areas for immediate focus. UniView is suitable for any area where comprehensive, logically organized, and timely data are key to supporting good clinical care.

UniView also provides tailored, use-case-specific screen layouts which optimize the presentation of advanced and integrated parameters, trend data, and waveforms for a variety of clinical scenarios, making it a versatile solution in many environments. For example:

  • In Overview layout, view monitoring data from all connected point-of-care and therapeutic devices including waveforms and alarms, for an overview of patient status.
  • In Hemodynamics layout, view trend data for noninvasive hemoglobin (SpHb®), pleth variability index (PVi®), and pulse rate to aid in visualizing patient status over time.
  • In Oxygenation layout, view ventilator waveforms alongside noninvasive trended hemoglobin (SpHb) and oxygen saturation (SpO2) to monitor a patient’s oxygenation status.
  • In Sedation layout, view high-fidelity EEG waveforms, patient state index (PSi), and anesthesia machine data to monitor a patient’s sedation.

In addition, hospitals will be able customize the view as preferred and even take advantage of individual customization using Masimo MyView™ technology.

Joe Kiani, Founder and CEO of Masimo, said, "We are answering clinicians' calls for logical, clinically transformational cockpits for the collaborative ORs and ICUs of the future. UniView is a great example of Masimo’s ongoing commitment to automating patient care, whether it's making pulse oximeters accurate when you need that accuracy most, creating new noninvasive monitoring technologies such as SpHb, or in this case, unsiloing data, enhancing connectivity, and communicating patient data as effectively and efficiently as possible, so that clinicians can focus more on their patients. We look forward to introducing additional enhancements soon – helping to bring automation and connectivity to the next level."

UniView builds on the success of Kite™, which projects data from Root® on a larger screen, by aggregating data from all of the connected devices in a room, including third-party ones, so that a supplemental display of all monitoring data can be viewed by all. UniView works in conjunction with Masimo Iris Gateway™ and Patient SafetyNet™* connectivity platforms. Complementing UniView, the recently announced Masimo Replica™ allows clinicians to view similar monitoring data for multiple patients, as well as view and respond to alarms and alerts, all from a smart phone, regardless of location.

@MasimoInnovates || #Masimo

*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect® (MOC-9®) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7® wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at www.masimo.com/cpub/clinical-evidence.htm.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo UniView™, Iris Gateway™, and Patient SafetyNet™. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo Replica, Iris Gateway, and Patient SafetyNet, contribute to positive clinical outcomes and patient safety; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Evan Lamb
Masimo
Phone: (949) 396-3376
Email: elamb@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

New Study Investigates the Performance of Masimo SpHb® During Acute Bleeding and After Fluid Resuscitation

Neuchatel, Switzerland – March 12, 2018 – Masimo (NASDAQ: MASI) announced today the findings of a recently published study in which researchers at Cairo University in Egypt evaluated the accuracy and trending of Masimo noninvasive and continuous hemoglobin (SpHb®), referenced to an invasive laboratory hemoglobin (Lab-Hb) measurement, during acute bleeding and after fluid resuscitation.1

Masimo Radical-7 with SpHb, PVi, and RD rainbow SET Sensor

Masimo Radical-7® with SpHb®, PVi®, and RD rainbow SET™ Sensor

In the study, Dr. Adel and colleagues sought to investigate the performance of SpHb in different volume statuses and perfusion states. They utilized intraoperative data from 70 patients scheduled for major orthopedic procedures with anticipated major blood loss. SpHb, as well as Masimo PVi® and Pi, were measured using a Masimo Radical-7® Pulse CO-Oximeter®. Lab-Hb was measured using a Beckman Coulter LH 750 analyzer. SpHb and Lab-Hb were recorded at three times – a baseline reading five minutes after endotracheal intubation, after major bleeding, and after fluid resuscitation – resulting in 210 time-matched readings, which were divided into fluid responsive and fluid non-responsive samples and low and high perfusion index samples.

Using Bland-Altman analysis, the researchers found "excellent correlation" between Lab-Hb and SpHb (r=0.938). In addition, they reported "excellent accuracy with moderate levels of agreement," as noted below, for various sample sets:

Sample setMean biasLimits of agreement
All 0.01 -1.33 to 1.34 g/dL
Fluid non-responsive -0.08 -1.27 to 1.11 g/dL
Fluid responsive 0.09 -1.36 to 1.54 g/dL
High Pi 0.01 -1.34 to 1.31 g/dL
Low Pi 0.04 -1.31 to 1.39 g/dL

The researchers also noted that polar plot analysis (angular bias of -4°) showed "good trending ability for SpHb as a follow-up monitor."

The investigators concluded that, "SpHb showed excellent correlation with Lab-Hb in fluid responders, fluid non-responders, low-Pi, and high-Pi states. Despite a favorable mean bias of 0.01 g/dL for SpHb, the relatively wide levels of agreement (-1.3 to 1.3 g/dL) might limit its accuracy. SpHb showed good performance as a trend monitor."

SpHb is not intended to replace laboratory blood testing. Clinical decisions regarding red blood cell transfusions should be based on the clinician’s judgment considering among other factors: patient condition, continuous SpHb monitoring, and laboratory diagnostic tests using blood samples.

@MasimoInnovates || #Masimo

Reference
1. Adel A, Awada W, Abdelhamid B, Omar H, Dayem O, Hasanin A, and Rady A. Accuracy and trending of noninvasive hemoglobin measurement during different volume and perfusion statuses. J Clin Mon. 2018. https://doi.org/10.1007/s10877-018-0101-z.

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect® (MOC-9®) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7® wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at www.masimo.com/cpub/clinical-evidence.htm.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Masimo Announces Replica™

Replica Allows Clinicians to Remotely Monitor Patients from Anywhere in Real Time

Las Vegas, Nevada – March 6, 2018 – Today at the 2018 HIMSS Annual Conference Masimo (NASDAQ: MASI) announced the release of Replica™, an application for smart phones and tablets that works in conjunction with Masimo Patient SafetyNet™*, a supplemental remote monitoring and clinician notification system. Replica allows clinicians to view continuous monitoring data for multiple patients, as well as view and respond to alarms and alerts, all from their smart phones, regardless of location.

With Patient SafetyNet, continuous monitoring data are available at a central viewing station. Replica builds on this capability by delivering continuous monitoring data and intelligent alarm notifications to remote clinicians on smart phones. Replica displays data relayed from connected bedside Masimo and third-party devices, such as ventilators and patient monitors. Replica also allows the display of high fidelity data, such as waveforms, in real time. Clinicians can also access up to 96 hours of historical data, aiding assessment of potential deterioration over time. The collation of data from multiple disparate sources in a single location provides clinicians with a more complete picture of patient status at a glance.

Masimo Replica

Masimo Replica™

Replica features intelligent two-way alarm and alert notification technology, derived from Patient SafetyNet's existing capabilities, that offers significant advantages over systems which send out rudimentary, one-way notifications. Replica extends Patient SafetyNet’s intelligence by routing and escalating detailed, color-coded alarm and alert notifications to active mobile devices, reaching on-duty and available clinicians. Clinicians can respond to notifications from the app – choosing to accept or forward – and see if other clinicians have already responded. By combining detailed monitoring data with intelligent notification, Replica helps to improve clinical collaboration, promoting informed, timely response and effective clinical coordination.

Joe Kiani, Founder and CEO of Masimo, said, "Given the high patient-to-clinician ratios common in many areas, such as the medical-surgical floor, there is an increasing need for continuous remote visibility into patient status. Patient SafetyNet, combined with the power of SET® pulse oximetry, has been shown to save lives, reduce rapid response activations, and reduce costs in post-surgical wards.1-3 Replica takes the benefits of Patient SafetyNet to a new level by intelligently and reliably delivering valuable patient data and notifications to clinicians wherever they may be – thus helping them to respond and intervene as effectively and efficiently as possible."

@MasimoInnovates || #Masimo

*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
2. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
3. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect® (MOC-9®) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7® wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at www.masimo.com/cpub/clinical-evidence.htm.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo Replica™ and Patient SafetyNet™. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo Replica and Patient SafetyNet, contribute to positive clinical outcomes and patient safety; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Evan Lamb
Masimo
Phone: (949) 396-3376
Email: elamb@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

Leading Nephrology Care Center in India Adopts Masimo Technologies
Across Continuum of Care

Bangalore, India – February 26, 2018 – Masimo (NASDAQ: MASI) announced today that NU Hospitals, a leading nephrology care center in India, has standardized on Masimo technologies across the continuum of care. NU Hospitals have entered into a strategic partnership with Masimo to adopt technologies in their operating rooms (ORs), intensive care units (ICUs), dialysis beds, and general wards at both of their facilities in Bangalore.

"We have been evaluating various technologies that could help our clinicians improve patient safety and at the same time help reduce the cost of care. Masimo, with its innovative range of solutions – including remote monitoring systems, depth of sedation monitoring, and noninvasive monitoring of hemoglobin and fluid responsiveness – will help us accomplish these twin objectives," said Dr. Prasanna Venkatesh, Pediatric Urologist & Managing Director, NU Hospitals.

NU Hospitals’ ORs will be equipped with Masimo Root® Patient Monitoring and Connectivity Hubs and Radical-7® Pulse CO-Oximeters®. The monitors will include noninvasive, continuous hemoglobin monitoring (SpHb®), a Masimo rainbow® parameter, and, via Masimo Open Connect® (MOC-9®) technology, SedLine® brain function monitoring.

In critical care areas and general wards, patients at NU Hospitals will now also be continuously monitored using a variety of bedside devices such as Root with Noninvasive Blood Pressure and Temperature and Rad-97™ Pulse CO-Oximeters. Measurements will include SpHb, SET® Measure-through Motion and Low Perfusion™ pulse oximetry, vital signs such as blood pressure and temperature, and, for dialysis patients, pleth variability index (PVi®) monitoring to assist in optimizing fluid management.

The bedside devices will be connected to Masimo Patient SafetyNet™*, a supplemental remote monitoring and clinician notification system which allows patient monitoring data to be accessed from a central viewing station. When changes occur in measured values that may indicate deterioration in a patient’s condition, Patient SafetyNet automatically sends wireless alerts directly to clinicians, wherever they may be, allowing clinicians to respond quickly to patients in potential distress. In addition, Patient SafetyNet will automate the transfer of patient data, including vital signs, early warning scores (EWS), and other physiological parameters, directly to NU Hospitals' electronic medical record (EMR) system.

Dr. Venkatesh Krishnamoorthy, Chairman and Sr. Consultant Urologist, NU Hospitals, commented, "We believe that every hospital patient should be continuously monitored. The automatic integration of data into our EMR and reduction in the manual recording of patient vitals will help us reduce transcription errors, build efficiency, and improve workflow."

"We are excited to work with NU Hospitals and help them take better care of their patients with our advanced monitoring technologies," said Jon Coleman, President of Worldwide Sales, Professional Services, and Medical Affairs, Masimo. "We applaud NU Hospitals for advancing the standard of care in their region."

Bharat Monteiro, Country Manager for Masimo in India, added, "We are hopeful that more hospitals in India will adopt such advanced technologies across the continuum of care to help improve patient safety and reduce the cost of care."

@MasimoInnovates || #Masimo

*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect® (MOC-9®) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7® wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at www.masimo.com/cpub/clinical-evidence.htm.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo Masimo Root®, Radical-7®, SpHb®, MOC-9®, SedLine®, Rad-97™, SET®, PVi®, and Patient SafetyNet™. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo Root, Radical-7, SpHb, MOC-9, SedLine, Rad-97, SET®, PVi, and Patient SafetyNet, contribute to positive clinical outcomes and patient safety; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Evan Lamb
Masimo
Phone: (949) 396-3376
Email: elamb@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

New Study Evaluates the Performance of Masimo SpHb® in Monitoring
Pediatric Trauma Patients

Irvine, California – February 22, 2018 – Masimo (NASDAQ: MASI) announced today the findings of a recently published study in which researchers at Michigan State University evaluated the performance of noninvasive hemodynamic monitoring (NIHM) using Masimo noninvasive and continuous hemoglobin (SpHb®), as compared to invasive laboratory hemoglobin (LabHb) monitoring, in clinically stable pediatric trauma patients with solid organ injury.1

In the study, Dr. Welker and colleagues utilized data from 21 patients under 18 years of age who had experienced blunt trauma, with a mean injury severity score of 16.6. Their hemodynamic status was assessed using physical examination and vital signs in conjunction with periodic LabHb monitoring per normal institutional pediatric trauma guidelines. In addition, NIHM using Masimo SpHb was measured continuously using a Masimo Radical-7® Pulse CO-Oximeter®, and SpHb values were recorded at multiple times to correspond with LabHb blood draws.

Masimo Radical-7 with SpHb

Masimo Radical-7® with SpHb®

Using Bland-Altman analysis, the researchers calculated an average bias of 0.80 g/dL between SpHb and LabHb, with a 95% confidence interval of +3.94 g/dL to -2.33 g/dL. They noted that, "Measurement trends were highly correlated in patients with stable hemoglobin levels and those requiring blood transfusion."

The investigators concluded that, "NIHM demonstrated clinically acceptable accuracy when following hemoglobin trends in the defined pediatric trend patient population. Slight variances between NIHM and LabHb values were occasionally noted, but did not affect clinical management. Continuous NIHM represents a potentially valuable adjunct to traditional laboratory hemoglobin monitoring."

SpHb is not intended to replace laboratory blood testing. Clinical decisions regarding red blood cell transfusions should be based on the clinician’s judgment considering among other factors: patient condition, continuous SpHb monitoring, and laboratory diagnostic tests using blood samples.

@MasimoInnovates || #Masimo

Reference
1. Welker E, Novak J, Jelsma L, Koehler T, Davis A, DeCou J, and Durkin E. Continuous hemoglobin monitoring in pediatric trauma patients with solid organ injury. J Pediatr Surg. 2018. https://doi.org/10.1016/j.jpedsurg.2017.12.015.

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect™ (MOC-9™) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7™ wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at www.masimo.com/cpub/clinical-evidence.htm.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo SpHb®. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo SpHb, contribute to positive clinical outcomes and patient safety; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Evan Lamb
Masimo
Phone: (949) 396-3376
Email: elamb@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

New Study Evaluates the Performance of Masimo PVi® as a Predictor of Fluid Responsiveness in Mechanically Ventilated ICU Patients

Neuchatel, Switzerland – February 12, 2018 – Masimo (NASDAQ: MASI) announced today the findings of a recently published study in which researchers at Bülent Ecevit University in Zonguldak, Turkey compared two noninvasive methods of predicting fluid responsiveness in mechanically ventilated patients in the intensive care unit (ICU): Masimo PVi® (pleth variability index, measured noninvasively and continuously using SET® pulse oximetry sensors) and dIVC (distensibility index of inferior vena cava, measured noninvasively by radiologists using an ultrasound machine and probe).1

In the study, Drs. Pişkin and Öz sought to compare the performance of the two methods by enrolling 72 mechanically ventilated patients and taking various measurements before and after passive leg raising (PLR). In addition to PVi (measured with Masimo Radical-7® Pulse CO-Oximeters®) and dIVC (measured by a radiologist using Esaote MyLab 30), central venous pressure (CVP) and cardiac index (CI) were measured. Patients who exhibited a greater than 15% increase in CI attributable to the PLR maneuver were classified as volume responders, and those with less than 15% or no change, as nonresponders.

Masimo Radical-7 with PVi

Masimo Radical-7® with PVi®

The researchers found that Masimo noninvasive and continuous PVi, at a threshold value of >14%, provided 95% sensitivity and 81.2% specificity (p<0.001, AUC = 0.939 (0.857-0.982)), which was statistically significant. Ultrasound, noninvasive dIVC, at a threshold value of >23.8%, provided 80% sensitivity and 87.5% specificity (p<0.001, AUC = 0.928 (0.842-0.975)), which was also statistically significant. The invasive method, CVP, at a threshold value of ≤7 mmHg, provided 70% sensitivity and 53.1% specificity to predict fluid responsiveness (p=0.066, Area Under the Curve = 0.622 (0.500-0.724)), which was not statistically significant.

The investigators noted that "our results show that noninvasively assessed PVi and dIVC were good predictors of fluid responsiveness after PLR in ICU patients on mechanical ventilation. By contrast, the invasively assessed CVP was a poor predictor of fluid responsiveness as a static variable of cardiac preload." They concluded that, "Both PVi and dIVC may be used to identify the fluid responsiveness of all ICU patients undergoing continuous treatment linked to mechanical ventilation; both methods are easily applied, noninvasive, and can be performed at the bedside."

@MasimoInnovates || #Masimo

Reference
1. Pişkin Ö and Öz I. Accuracy of pleth variability index compared with inferior vena cava diameter to predict fluid responsiveness in mechanically ventilated patients. Medicine. (2017) 96:47(e8889).

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect™ (MOC-9™) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7™ wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at www.masimo.com/cpub/clinical-evidence.htm.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo PVi®. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo PVi, contribute to positive clinical outcomes and patient safety; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Evan Lamb
Masimo
Phone: (949) 396-3376
Email: elamb@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

Masimo Announces CE Marking of Eve™ CCHD Newborn Screening Application for the Rad-97™ Pulse CO-Oximeter®

Neuchatel, Switzerland – February 7, 2018 – Masimo (NASDAQ: MASI) announced today the CE marking of Eve™, a critical congenital heart disease (CCHD) newborn screening application, for the Rad-97™ Pulse CO-Oximeter®. Eve combines the power of Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry with a pre-ductal to post-ductal synchronization algorithm designed to reduce calculation errors.

Eve, also available on the Radical-7® Pulse CO-Oximeter, simplifies the CCHD screening process by providing visual instructions, animations, an automatic synchronization algorithm, and a detailed, easy-to-interpret display of screening results. The ability to label results with unique patient identifiers for both mother and newborn facilitates intuitive session management and seamless electronic charting. Eve also allows clinicians to incorporate perfusion index into screening, which has been shown to increase sensitivity to the detection of CCHD in infants with pathologically low perfusion.1

Masimo Rad-97 with Eve

Masimo Rad-97™ with Eve™

CCHD affects approximately 3 newborns per 1000 live births2 and requires intervention soon after birth to prevent significant morbidity or mortality; later detection in infants also increases the risk of brain damage.3 In a study of 39,821 infants, CCHD screening sensitivity increased from 63% with physical exam alone to 83% with physical exam and Masimo SET® pulse oximetry.4 In a study of 122,738 infants – the largest CCHD screening study to date – CCHD screening sensitivity increased from 77% to 93% with the combined use of Masimo SET® and clinical assessment.5

"Multiple studies have shown that Masimo SET® pulse oximetry can help improve CCHD screening, helping to save many newborns' lives while reducing the cost of care," commented Joe Kiani, Founder and CEO of Masimo. "Eve builds on the powerful benefits of SET® by transforming pulse oximeters into intuitive screening tools which can help clinicians perform the crucial work of screening newborns in an easy-to-follow and intuitive application."

Eve has not obtained FDA clearance and is not available in the United States. Radical-7 and Rad-97 have obtained FDA clearance and are available, without Eve, in the United States.

@MasimoInnovates || #Masimo

References
1. de-Wahl Ganelli et al. Noninvasive Peripheral Perfusion Index as a Possible Tool for Screening for Critical Left Heart Obstruction. Acta Paediatr. 2007 Oct;96(10):1455-1459.
2. Hoffman JL et al. The incidence of congenital heart disease. J Am Coll Cardiol. 2002;39(12):1890-1900.
3. 2011 Legislative Report; State of Maryland, Department of Health and Mental Hygience, State Advisory Council on Hereditary and Congenital Disorders. Recommendations on Implmentation of Screening for Critical Congenital Hearth Disease in Newborns. Page 7.
4. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;Jan 8;338.
5. Zhao et al. Pulse oximetry with clinical assessment to screen for congenital heart disease in neonates in China: a prospective study. Lancet. 2014 Aug 30;384(9945):747-54.

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect™ (MOC-9™) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7™ wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at www.masimo.com/cpub/clinical-evidence.htm.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo SET®, Eve™, Rad-97™, and Radical-7®. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo SET®, Eve, Rad-97, and Radical-7, contribute to positive clinical outcomes and patient safety; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Evan Lamb
Masimo
Phone: (949) 396-3376
Email: elamb@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

Masimo to Report Fourth Quarter and Full Year 2017 Financial Results after Market Close on Tuesday, February 27

Conference call and webcast to begin at 1:30 p.m. PT (4:30 p.m. ET)

IRVINE, Calif., January 30, 2018 - Masimo (NASDAQ: MASI) announced today that it will release fourth quarter and full year 2017 financial results for the period ended December 30, 2017, after the market closes on Tuesday, February 27, 2018. The conference call to review the results will begin at 1:30 p.m. PT (4:30 p.m. ET) and will be hosted by Joe Kiani, Chairman and Chief Executive Officer, and Micah Young, Executive Vice President and Chief Financial Officer.

A live webcast of the conference call will be available online from the investor relations page of the company's corporate website at www.masimo.com. The dial-in numbers are (888) 520-7182 for domestic callers and +1 (706) 758-3929 for international callers. The reservation code for both dial-in numbers is 9789137. After the live webcast, the call will be available on Masimo's website through March 27, 2018. In addition, a telephonic replay of the call will be available through March 6, 2018. The replay dial-in numbers are (855) 859-2056 for domestic callers and +1 (404) 537-3406 for international callers. Please use reservation code 9789137.

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect™ (MOC-9™) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7™ wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com.

Investor Contact:
Eli Kammerman
Phone: (949) 297-7077
Email: ekammerman@masimo.com

Media Contact:
Irene Paigah
Phone: (858) 859-7001
Email: irenep@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

Masimo Announces FDA Clearance of Next Generation SedLine®
Brain Function Monitoring

Irvine, California – January 29, 2018 – Masimo (NASDAQ: MASI) announced today FDA clearance of Next Generation SedLine® brain function monitoring. SedLine helps clinicians monitor the state of the brain under anesthesia with bilateral acquisition and processing of four leads of electroencephalogram (EEG) signals. Next Generation SedLine features an enhanced signal processing engine, driving a variety of performance improvements and helping give clinicians a more complete picture of the brain.

Masimo Root with Next Generation SedLine Brain Function Monitoring

Masimo Root® with Next Generation SedLine®Brain Function Monitoring

Next Generation SedLine provides an enhanced Patient State Index (PSi) – a processed EEG parameter related to the effect of anesthetic agents – based on its enhanced signal processing engine.

In addition, Next Generation SedLine displays an enhanced, Multitaper Density Spectral Array (DSA). The DSA represents activity in both sides of the brain. When displaying a Multitaper DSA, EEG data are transformed into the frequency domain, and may provide a better display of EEG features.

Joe Kiani, Founder and CEO of Masimo, said, "Masimo is committed to innovation in the brain function monitoring space. With the improved performance offered by its enhanced signal processing capabilities, we expect Next Generation SedLine to impact brain function monitoring just as SET® impacted pulse oximetry."

When used with the RD SedLine™ EEG sensor, Next Generation SedLine can be used simultaneously with O3® regional oximetry on the Root® patient monitoring and connectivity platform for even more insight into a patient's brain. O3 may help clinicians monitor cerebral oxygenation in situations in which pulse oximetry alone may not be fully indicative of the oxygen in the brain.

@MasimoInnovates || #Masimo

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect™ (MOC-9™) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7™ wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at www.masimo.com/cpub/clinical-evidence.htm.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo Next Generation SedLine® and O3®. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo Next Generation SedLine and O3, contribute to positive clinical outcomes and patient safety; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Evan Lamb
Masimo
Phone: (949) 396-3376
Email: elamb@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

New Study Investigates the Clinical Utility of ORi™, Masimo Oxygen Reserve Index™, in Obese Patients

Neuchatel, Switzerland – January 22, 2018 – Masimo (NASDAQ: MASI) announced today the findings of an abstract presented at the annual meeting of the Society for Technology in Anesthesia (STA) in Miami, Florida. In the study, researchers at the UC Davis School of Medicine evaluated the potential clinical utility of Masimo Oxygen Reserve Index™ (ORi™) as an early warning of impending arterial hemoglobin desaturation in obese patients.1 This is the first published research investigating the utility of ORi in this particular population group.

ORi is a relative indicator of a patient's oxygen reserve in the moderate hyperoxic region (partial pressure of oxygen in arterial blood [PaO2] in the range of 100 to 200 mmHg). As an "index" parameter with a unit-less scale between 0 and 1, ORi can be trended and has optional alarms to notify clinicians of changes in a patient’s oxygen reserve.

In the prospective, observational study, Dr. Ayala and colleagues analyzed data from 36 adult patients with BMI between 30 and 40 kg/m2 who were scheduled for elective surgical procedures requiring general anesthesia and endotracheal intubation. The patients' ORi values were measured using a Masimo Root® Patient Monitoring and Connectivity Platform with Radical-7® Pulse CO-Oximeter®. The researchers recorded the time elapsed from the start of ORi alarming (triggered by decrease in the absolute value and rate of change in ORi) to 98% oxygen saturation, and considered this interval to be the average increase in warning time provided by ORi.

The researchers found that among the patients, the average time from the start of ORi alarming to 98% oxygen saturation was 42 ± 49 seconds (ranging from 5 to 255 seconds). Excluding two outliers, the average increase in warning time provided by ORi was 33 ± 23 seconds (ranging from 5 to 107 seconds).

The researchers concluded that the study "demonstrates the ability of ORi to provide advanced warning of arterial desaturation as an adjunct to SpO2 in this high risk patient population. This additional warning time can potentially translate to improved patient safety by allowing earlier calls for help, assistance from a more experienced person, or modification of airway management. For this analysis we defined the advance warning to end at 98% SpO2, with a defined trigger for intervention at 94% SpO2.”

In another study, researchers at Children’s Medical Center in Dallas, Texas concluded that ORi could provide clinicians with a median of 31.5 seconds advanced warning of impending desaturation in pediatric patients with induced apnea after pre-oxygenation.2

UC Davis received funding from Masimo for the ORi study.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.

@MasimoInnovates || #Masimo

References
1. Ayala S, Singh A, Applegate R, and Fleming N. Oxygen Reserve Index: Utility as Early Warning of Desaturation in Morbidly Obese Patients. Proceedings from the 2018 STA Annual Meeting, Miami, FL.
2. Szmuk P et al. Oxygen Reserve Index A Novel Noninvasive Measure of Oxygen Reserve–A Pilot Study. Anesthesiology. 4 2016, Vol. 124, 779-784. doi:10.1097/ALN.0000000000001009.

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect™ (MOC-9™) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7™ wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at www.masimo.com/cpub/clinical-evidence.htm.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo ORi™. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo ORi, contribute to positive clinical outcomes and patient safety; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Evan Lamb
Masimo
Phone: (949) 396-3376
Email: elamb@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

Masimo Announces FDA Clearance for Home Use of Rad-97™

Rad-97 Comes with Advanced Communication Capabilities to Facilitate Telehealth

Irvine, California – January 9, 2018 – Masimo (NASDAQ: MASI) announced today FDA clearance for home use of the Rad-97™ Pulse CO-Oximeter®. Rad-97 offers Masimo noninvasive and continuous monitoring, through Measure-through Motion and Low Perfusion™ SET® pulse oximetry and upgradeable rainbow® technologies, in a compact, standalone monitor that combines advanced connectivity and communication capabilities for telehealth with an interface easily customized for use at home.

Masimo Rad-97 Pulse CO-Oximeter with Optional Integrated Camera

Masimo Rad-97 Pulse CO-Oximeter with Optional Integrated Camera

With an ever increasing number of patients receiving care at home, there is a growing need for high-quality home monitoring and telehealth equipment. Rad-97, in addition to SET® pulse oximetry and advanced parameter monitoring technology through rainbow® noninvasive monitoring, is available with optional integrated blood pressure and capnography measurements. Its innovative communication capabilities allow monitoring data from a variety of third-party Bluetooth®-enabled devices used at home, including thermometers, weight scales, and glucometers, to seamlessly transfer to Rad-97 – and from there to anywhere in the world, in real time. The optional integrated camera allows remote clinicians to interact with patients over live audio and video. Rad-97 brings hospital-grade technology to the home in a single, integrated device that is a monitoring, connectivity, and telecommunications hub.

Patient surveillance using Masimo Patient SafetyNet

Patient surveillance using Masimo Patient SafetyNet

With its built-in enterprise WiFi capability, Rad-97 has the ability to connect wirelessly from the home to supplemental patient monitoring systems in the hospital, including Masimo Patient SafetyNet™*, allowing clinicians to remotely observe patient status while facilitating automatic data transfer to hospital electronic medical record (EMR) systems. Rad-97 can trend and store data for up to 96 hours.

With its intuitive touchscreen interface, Rad-97 is easy to use for clinicians and non-clinicians alike, and can be easily customized to meet the needs of home users. The device can be configured in Home mode, which streamlines basic utility, giving home users access to applicable settings and messages, while hiding others and locking alarm settings, minimizing the chances of inadvertent interaction.

Joe Kiani, Founder and CEO of Masimo, said, "Rad-97 is well-suited for a variety of care settings, now including home. Facilitated by its powerful connectivity and telehealth capabilities, Rad-97 allows clinicians to remotely interact with patients, as well as monitor their status and spot trends from afar through automated data collection and transfer."

@MasimoInnovates || #Masimo

*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect™ (MOC-9™) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7™ wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at www.masimo.com/cpub/clinical-evidence.htm.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo Rad-97™. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo Rad-97, contribute to positive clinical outcomes and patient safety; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Evan Lamb
Masimo
Phone: (949) 396-3376
Email: elamb@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.

Masimo Announces CE Marking and Release of Oxygen Reserve Index™
rainbow Lite Sensors

Neuchatel, Switzerland – January 2, 2018 – Masimo (NASDAQ: MASI) announced today the CE marking and release of RD rainbow Lite SET™ sensors, which enable the monitoring of Masimo Oxygen Reserve Index™ (ORi™) and RPVi™, an improved PVi® that allows clinicians to assess fluid responsiveness noninvasively and continuously1 at a fraction of the cost of invasive methods, and at a fraction of the cost of rainbow® sensors. rainbow Lite sensors utilize twice as many wavelengths of light as SET® sensors, allowing rainbow Lite sensors to provide ORi and RPVi along with Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry.

Masimo RD rainbow Lite SET™ Sensor

ORi is the first noninvasive and continuous parameter to provide insight into a patient’s oxygen reserve in the moderate hyperoxic range. In conjunction with SET® pulse oximetry, ORi may provide advanced warning of impending desaturation, which may allow clinicians to intervene sooner. For example, in a study of 25 pediatric patients undergoing general anesthesia with orotracheal intubation, researchers found that ORi helped clinicians identify impending desaturation a median of 31.5 seconds before noticeable changes in oxygen saturation (SpO2) occurred.2 In another recent study of 106 adult patients scheduled for surgery with arterial catheterization and intraoperative blood gases analyses, researchers found a significant relationship between change in PaO2 and change in ORi.3 In addition, ORi may provide insight into oxygen reserve when titrating patients who are receiving supplemental oxygen.4

Joe Kiani, Founder and CEO of Masimo, said, "rainbow Lite sensors allow clinicians, who depend on powerful SET® pulse oximetry technology, to augment their patient monitoring with ORi and newly introduced RPVi. Given the positive reception of ORi in available markets, and feedback from clinicians who see great value in the benefits of ORi monitoring, we are excited to make ORi and RPVi accessible via the cost-effective solution represented by RD rainbow Lite SET. Hospitals that standardize on RD rainbow Lite SET will pay only nominally more per sensor than for SET®."

Masimo RPVi is a multi-wavelength version of Pleth Variability Index (PVi). RPVi is designed to provide enhanced assessment of changes in fluid volume compared to PVi5, which has been shown in over 90 independent clinical studies to be as effective as invasive monitoring methods.6

With the addition of RD rainbow Lite SET, the RD family of sensors is now available in three levels of capability: RD SET, utilizing two wavelengths (2 LED) and featuring SET® pulse oximetry; RD rainbow Lite SET, which utilizes four wavelengths (4 LED) and adds the ability to measure ORi and RPVi; and RD rainbow SET, which utilizes over seven wavelengths (7+ LED) and enables the measurement of additional advanced noninvasive parameters such as SpHb® (total hemoglobin), SpCO® (carboxyhemoglobin), SpMet® (methemoglobin), and SpOC™ (oxygen content).

Like RD SET sensors, RD rainbow Lite SET sensors are designed to maximize patient comfort and optimize clinician workflow. The sensors are lightweight and have a flat, soft cable with smooth edges, so that they lie comfortably on a patient’s hand or foot. The sensors feature an intuitive sensor-to-cable connection, with tactile and audible feedback to ensure a proper connection, and have graphics printed on both sides to assist with application.

Devices with ORi and RPVi measurements and RD rainbow Lite SET sensors have not received FDA 510(k) clearance and are not available for sale in the United States.

@MasimoInnovates || #Masimo

References
1. Forget P, Lois F, de Kock M. Goal-Directed Fluid Management Based on the Pulse Oximeter-Derived Pleth Variability Index Reduces Lactate Levels and Improves Fluid Management. Anesth Analg. 2010 Oct;111(4):910-4.
2. Szmuk P, Steiner JW, Olomu PN, Ploski RP, Sessler DI, and Ezri T. Oxygen Reserve Index A Novel Noninvasive Measure of Oxygen Reserve—A Pilot Study. Anesthesiology. 4 2016, Vol. 124, 779-784. doi:10.1097/ALN.0000000000001009.
3. Applegate R, Dorotta I, Wells B, Juma D, and Applegate P. The Relationship Between Oxygen Reserve Index and Arterial Partial Pressure of Oxygen During Surgery. Anesth Analg. 2016 Sep; 123(3); 626-633.
4. Scheeren TWL, Belda FJ and Perel A. The oxygen reserve index (ORi): a new tool to monitor oxygen therapy. J Clin Monit Comput. 2017. doi:10.1007/s10877-017-0049-4.
5. Masimo data on file.
6. Published clinical studies on PVi can be found at www.masimo.com/en-GB/home/clinical-evidence/pleth-variability-index-pvi/.

About Masimo
Masimo (NASDAQ: MASI) is a global leader in innovative noninvasive monitoring technologies. Our mission is to improve patient outcomes and reduce the cost of care. In 1995, the company debuted Masimo SET® Measure-through Motion and Low Perfusion™ pulse oximetry, which has been shown in multiple studies to significantly reduce false alarms and accurately monitor for true alarms. Masimo SET® has also been shown to help clinicians reduce severe retinopathy of prematurity in neonates,1 improve CCHD screening in newborns,2 and, when used for continuous monitoring with Masimo Patient SafetyNet™* in post-surgical wards, reduce rapid response activations and costs.3,4,5 Masimo SET® is estimated to be used on more than 100 million patients in leading hospitals and other healthcare settings around the world,6 and is the primary pulse oximetry at 17 of the top 20 hospitals listed in the 2017-18 U.S. News and World Report Best Hospitals Honor Roll.7 In 2005, Masimo introduced rainbow® Pulse CO-Oximetry technology, allowing noninvasive and continuous monitoring of blood constituents that previously could only be measured invasively, including total hemoglobin (SpHb®), oxygen content (SpOC™), carboxyhemoglobin (SpCO®), methemoglobin (SpMet®), Pleth Variability Index (PVi®), and more recently, Oxygen Reserve Index (ORi™), in addition to SpO2, pulse rate, and perfusion index (Pi). In 2014, Masimo introduced Root®, an intuitive patient monitoring and connectivity platform with the Masimo Open Connect™ (MOC-9™) interface, enabling other companies to augment Root with new features and measurement capabilities. Masimo is also taking an active leadership role in mHealth with products such as the Radius-7™ wearable patient monitor, iSpO2® pulse oximeter for smartphones, and the MightySat™ fingertip pulse oximeter. Additional information about Masimo and its products may be found at www.masimo.com. Published clinical studies on Masimo products can be found at www.masimo.com/cpub/clinical-evidence.htm.

ORi has not received FDA 510(k) clearance and is not available for sale in the United States.
*The use of the trademark Patient SafetyNet is under license from University HealthSystem Consortium.

References
1. Castillo A et al. Prevention of Retinopathy of Prematurity in Preterm Infants through Changes in Clinical Practice and SpO2 Technology. Acta Paediatr. 2011 Feb;100(2):188-92.
2. de-Wahl Granelli A et al. Impact of pulse oximetry screening on the detection of duct dependent congenital heart disease: a Swedish prospective screening study in 39,821 newborns. BMJ. 2009;338.
3. Taenzer AH et al. Impact of Pulse Oximetry Surveillance on Rescue Events and Intensive Care Unit Transfers: A Before-And-After Concurrence Study. Anesthesiology. 2010; 112(2):282-287.
4. Taenzer AH et al. Postoperative Monitoring – The Dartmouth Experience. Anesthesia Patient Safety Foundation Newsletter. Spring-Summer 2012.
5. McGrath SP et al. Surveillance Monitoring Management for General Care Units: Strategy, Design, and Implementation. The Joint Commission Journal on Quality and Patient Safety. 2016 Jul;42(7):293-302.
6. Estimate: Masimo data on file.
7. http://health.usnews.com/health-care/best-hospitals/articles/best-hospitals-honor-roll-and-overview.

Forward-Looking Statements
This press release includes forward-looking statements as defined in Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934, in connection with the Private Securities Litigation Reform Act of 1995. These forward-looking statements include, among others, statements regarding the potential effectiveness of Masimo RD rainbow Lite SET™ sensors, ORi™, RPVi™, and PVi®. These forward-looking statements are based on current expectations about future events affecting us and are subject to risks and uncertainties, all of which are difficult to predict and many of which are beyond our control and could cause our actual results to differ materially and adversely from those expressed in our forward-looking statements as a result of various risk factors, including, but not limited to: risks related to our assumptions regarding the repeatability of clinical results; risks related to our belief that Masimo's unique noninvasive measurement technologies, including Masimo RD rainbow Lite sensors, ORi, RPVi, and PVi, contribute to positive clinical outcomes and patient safety; as well as other factors discussed in the "Risk Factors" section of our most recent reports filed with the Securities and Exchange Commission ("SEC"), which may be obtained for free at the SEC's website at www.sec.gov. Although we believe that the expectations reflected in our forward-looking statements are reasonable, we do not know whether our expectations will prove correct. All forward-looking statements included in this press release are expressly qualified in their entirety by the foregoing cautionary statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of today's date. We do not undertake any obligation to update, amend or clarify these statements or the "Risk Factors" contained in our most recent reports filed with the SEC, whether as a result of new information, future events or otherwise, except as may be required under the applicable securities laws.

Evan Lamb
Masimo
Phone: (949) 396-3376
Email: elamb@masimo.com

Masimo, SET, Signal Extraction Technology, Improving Patient Outcome and Reducing Cost of Care by Taking Noninvasive Monitoring to New Sites and Applications, rainbow, SpHb, SpOC, SpCO, SpMet, PVI are trademarks or registered trademarks of Masimo.