1.

Oxygen saturation is estimated by _________

A. ratio (R) of pulse-added red absorbance at 660 nm to the pulse-added infrared absorbances at 940 nm
B. ratio (R) of pulse-added red absorbance at 940 nm to the pulse-added infrared absorbances at 660 nm
C. ratio (R) of pulse-added red absorbance at 330 nm to the pulse-added infrared absorbances at 940 nm
D. ratio (R) of pulse-added red absorbance at 940 nm to the pulse-added infrared absorbances at 330 nm
Answer» B. ratio (R) of pulse-added red absorbance at 940 nm to the pulse-added infrared absorbances at 660 nm


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