Masimo received European approval for the O3 regional oximeter that interfaces with the company’s Root patient monitoring system. The system works through the MOC-9 modules that can hold up to two near-infrared spectroscopy sensors, each of which features four LEDs and two detectors. The new offering allows for continuous regional monitoring of both tissue oxygen saturation (rSO2) and arterial blood oxygenation (SpO2) simultaneously with up to four sensors.
The system is intended particularly for cardiac procedures when optimal brain oxygenation and cerebral perfusion have to be maintained.
From the announcement:
O3 helps clinicians detect regional hypoxemia that pulse oximetry alone can miss. In addition, the onboard pulse oximetry capability in O3 sensors can automate the differential analysis of regional to central oxygen saturation. O3monitoring is as simple as applying O3regional oximetry sensors to the forehead and connecting the O3 MOC-9 module to any Root through one of its three MOC-9 ports.
In an abstract presented at the Society for Technology in Anesthesia 2014 Annual Meeting in Orlando, Fla., Dr. Daniel Redford from the University of Arizona evaluated cerebral oxygen saturation on 23 subjects and 202 paired measurements of rSO2 from O3regional oximetry and reference arterial and venous blood samples (SavO2).1Reference blood samples were taken from both an arterial cannula placed in the radial artery and a catheter placed in the internal jugular bulb vein, obtained at baseline and after a series of increasingly hypoxic states. O3 regional oximetry had an absolute accuracy of 4.0% and trend accuracy of 2.1%.
Press release: Masimo Announces CE Marking of O3™ Regional Oximetry
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