Diagnostics
Pulse Oximetry
What is pulse oximetry?
Pulse oximetry is a test that measures the oxygen saturation level of the blood.
A pulse oximeter is a medical device used to measure the oxygen saturation level (SpO2) and pulse rate (heart rate) of an individual. It is a small, portable, and non-invasive device that is commonly used in healthcare settings and is also available for home use.
Why is pulse oximetry done?
This procedure is performed by a specialist called a pulmonologist who specializes in lung disorders.
What to expect during a pulse oximetry test?
During the test
- A small clip-like device called a pulse oximeter is gently attached to the finger.
- The pulse oximeter may emit a small beam of light, which is painless and non-invasive.
- The patient may be asked to keep still during the test to obtain accurate readings.
- The pulse oximeter displays oxygen saturation level and may also show heart rate.
Interpreting Pulse Oximetry Readings
The pulse oximeter reading is usually displayed as a percentage, indicating the oxygen saturation level in the blood. A normal reading is typically between 95% and 100%.
References
- American Lung Association. Pulse Oximetry. Available from: https://www.lung.org/lung-health-diseases/lung-procedures-and-tests/pulse-oximetry
- Pulse Oximetry. Available from: https://www.hopkinsmedicine.org/health/treatment-tests-and-therapies/pulse-oximetry
- Pulse Oximetry: Purpose, Uses, and How to Take a Reading. Available from: https://www.healthline.com/health/pulse-oximetry
