pulzusoximéter

A pulzusoximéter is a non-invasive medical device used to measure the oxygen saturation level in a person's blood and their pulse rate. It typically clips onto a finger, toe, or earlobe. The device works by shining two different wavelengths of light through the tissue. One wavelength is absorbed more by oxygenated hemoglobin, and the other is absorbed more by deoxygenated hemoglobin. By measuring how much light passes through, the pulzusoximéter can calculate the percentage of hemoglobin that is carrying oxygen, known as SpO2. Simultaneously, it detects the pulsatile blood flow, allowing it to determine the heart rate. This information is crucial for assessing respiratory and circulatory function. Pulzusoximéter readings can be affected by factors such as poor circulation, nail polish, excessive movement, and ambient light. They are commonly used in hospitals, emergency medical services, and by individuals with chronic respiratory conditions.