Cerebral Oximetry

Root with O3 Regional Oximetry

Available for Adult, Pediatric, and Infant & Neonatal Patients

  • May help clinicians monitor cerebral oxygenation in situations in which pulse oximetry alone may not be fully indicative of the oxygen in the brain
  • Seamlessly integrates with the Root platform alongside SedLine® Brain Function Monitoring (available for adult and pediatric patients) for a more complete brain monitoring solution

O3 Display

O3 Display

Masimo - O3 Display Cerebral Oximetry

O3 Monitoring

O3 Monitoring


The Root patient monitoring and connectivity hub offers plug-and-play monitoring with Masimo Open Connect® (MOC-9®) modules.*

Applying O3 Sensor

Apply the O3 sensor to the forehead or somatic site.

  • Adult Adhesive Sensor (≥40 kg)
  • Pediatric Adhesive Sensor (≥5 kg and <40 kg)
  • Infant and Neonatal Adhesive Sensor (<10 kg)
Connect the O3 sensors to an O3 MOC-9 module

Connect the O3 sensors to an O3 MOC-9 module (up to two sensors per module).

Connecting O3 MOC-9 Module to port in the Root

Connect the O3 MOC-9 module to one of three Root MOC-9 Ports.

*In countries with regulatory approval and Root devices with the correct software version.

A More Complete Picture of the Brain

A More Complete Picture of the Brain

Adult in ICU with O3

O3 Regional Oximetry can be used simultaneously with Next Generation SedLine on the Root platform for a more complete picture of the brain. Next Generation SedLine brain function monitoring helps clinicians monitor the state of the brain under anesthesia or sedation 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 an enhanced Multitaper Density Spectral Array (DSA).


Masimo - Thumbnail of O3 Studies

Follow the link for available O3 studies.

Masimo - O3 Regional Oximetry Series


Masimo - Product Information, Root with O3 Regional Oximetry

Product Information

Masimo - Product Information, O3 Regional Oximetry

Product Information

Masimo - Brochure Perioperative Care Solutions
Masimo - Case Study, Unilateral Cerebral Oxygenation Desaturation

Case Study

Caution: Federal (USA) law restricts this device to sale by or on the order of a physician. See instructions for use for full prescribing information, including indications, contraindications, warnings, and precautions. The O3 System with infant and neonatal sensor is not licensed for sale in Canada.