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Pulse Oximeter

A pulse oximeter is a device that checks how much oxygen is in the blood.

A small clip is put on a finger, toe, or earlobe. The light beam in the clip measures the oxygen of the red blood cells that move through the cells in the finger, toe, or earlobe. The person's oxygen level can be read on the display.

The pulse oximeter often has an alarm for blood oxygen levels that fall below a safe level.

By Healthwise Staff
Primary Medical Reviewer Adam Husney, MD - Family Medicine
Specialist Medical Reviewer John M. Freedman, MD - Anesthesiology
Current as of September 4, 2013

WebMD Medical Reference from Healthwise

Last Updated: September 04, 2013
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.