What is pulse oximetry and why do patients need it?

Pulse oximetry is a non-invasive method of monitoring a patient's oxygen saturation (SpO2). It involves placing a small probe on the patient's finger, earlobe, or toe, which shines light through the skin to measure the amount of oxygen in the blood.

Pulse oximetry is used to:

* Monitor the oxygen saturation of patients with respiratory problems, such as asthma, chronic obstructive pulmonary disease (COPD), and pneumonia

* Monitor the oxygen saturation of patients who are undergoing surgery or other medical procedures that may affect their breathing

* Monitor the oxygen saturation of patients who are receiving supplemental oxygen therapy

* Screen for potential oxygen desaturation in patients who are at risk, such as those with sleep apnea or heart failure

Pulse oximetry is a simple, painless procedure that provides valuable information about a patient's oxygen status. It is a commonly used tool in hospitals, clinics, and other healthcare settings.