pingemõõtur

A pingemõõtur, also known as a pulse oximeter, is a non-invasive medical device used to measure oxygen saturation in the blood and pulse rate. It works by passing red and infrared light through a translucent part of the body, such as a fingertip or earlobe. The device measures the difference in light absorption between oxygenated and deoxygenated hemoglobin. This data is then processed to calculate the percentage of hemoglobin that is saturated with oxygen, known as SpO2, and the pulse rate.

The results are typically displayed on a small screen. A normal SpO2 reading for a healthy individual is usually between 95% and 100%. Lower readings may indicate hypoxia, a condition where the body is not receiving enough oxygen. Pingemõõturid are commonly used in hospitals, clinics, and by individuals for home monitoring, especially by those with respiratory or cardiac conditions. They are also frequently used during anesthesia and in emergency medical situations to quickly assess a patient's oxygenation status. While generally accurate, readings can be affected by factors such as poor circulation, cold extremities, nail polish, or certain types of movement. Regular calibration and proper usage are important for obtaining reliable measurements.