How many minutes should a blood oxygen monitor be used to measure?

Under normal circumstances, a pulse oximeter should be used for about half a minute. It is recommended to perform the measurement under medical guidance to help reduce measurement errors. Specific analysis is as follows:

A pulse oximeter is a medical device used to measure blood oxygen saturation and pulse rate. Typically, measurements take about 30 seconds. It uses optical technology to detect the amount of oxygen in the blood and provides immediate results. Blood oxygen saturation refers to the percentage of hemoglobin in the blood that is bound to oxygen. Normally, healthy individuals should have an oxygen saturation level above 95%. Lower oxygen saturation levels may indicate insufficient oxygen supply or impaired respiratory function.

The pulse oximeter works by emitting light through the skin via a sensor, then measuring the extent to which light is absorbed after passing through the tissue, thereby calculating the blood oxygen saturation value. It is generally recommended to use the device under the guidance of a healthcare professional to avoid affecting the accuracy of the results.

It should be noted that the blood oxygen saturation reading provided by a pulse oximeter is an approximation. If further diagnosis is needed, prompt medical consultation is advised.