What is the main purpose of using a pulse oximeter?

The primary purpose of a pulse oximeter is to measure the oxygen saturation level in the blood. This non-invasive device works by emitting light through the skin, typically on a fingertip, and detecting the amount of light absorbed by oxygenated and deoxygenated hemoglobin in the blood. This measurement is crucial for assessing a patient’s respiratory function and overall oxygen delivery to tissues.

Maintaining appropriate oxygen saturation levels is vital, especially in patients with respiratory conditions or those undergoing surgery, as low levels may indicate hypoxemia, necessitating further evaluation or intervention. Other monitoring aspects, such as blood pressure or heart rate, are conducted with different devices and methods, making the pulse oximeter uniquely focused on oxygen saturation.