Finger oximeter. Pulse oximetry transducer properly placed on a
finger.
Fold the oximeter. over the end of the digit.
A pulse oximeter works by passing a beam of red and infrared light
through a pulsating capillary bed.
The ratio of red to infrared blood light transmitted gives a
measure of the oxygen saturation of the blood.
Fingertip Pulse Oximeter with alarm is designed to provide an
affordable yet accurate way for
spot-checking blood oxygen saturation levels and pulse rate.
Pulse oximetry is a noninvasive method for monitoring a person's
oxygen saturation (SO2).
Though its reading of SpO2 (peripheral oxygen saturation) is not
always identical to the more
desirable reading of SaO2 (arterial oxygen saturation) from
arterial blood gas analysis,
the two are correlated well enough that the safe, convenient,
noninvasive,
inexpensive pulse oximetry method is valuable for measuring oxygen
saturation in clinical use.