O3 Regional Oximeter Chapter 7: Specifications
www.masimo.com 46 Masimo
Citations
[1] The clinical study was done on healthy adult male and female subjects with light to dark skin
pigmentation. The trending and absolute rSO
2
accuracies were determined by testing in the
range of 45% to 85% SavO2 against 30% arterial and 70% jugular venous blood oxygen
saturations, measured by a laboratory CO-Oximeter. The study confirms that the O3 System
measurements meet the requirements.
[2] Trending accuracy is the root mean square relative error. It is calculated by comparing a
series of samples to the gold standard and the accuracy refers to how the changes in a series of
samples “trend” with the gold standard. The gold standard used was the oxygen saturation
calculated from arterial and jugular venous blood gas analysis.
[3] Absolute accuracy is the root mean square error where error is the difference between
individual samples and a gold standard.
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