A pulse oximeter is a device that clips on your finger, toe, or earlobe to measure blood oxygen saturation. Here's how it works and how to read it.

The pulse oximeter is currently one of the most essential medical devices. This health instrument can actually help you during the ongoing COVID-19 pandemic. In this photo illustration, a young woman ...

Consumer Reports has no financial relationship with advertisers on this site. One of the most isolating and scary aspects of the coronavirus pandemic is that people who have COVID-19 or suspect they ...

Doctors say for most people they aren't needed -- and may even be a bad idea. Lung problems like pneumonia and respiratory failure can be some of the most severe symptoms of COVID-19. Knowing how your ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. (CNN) — Many patients with severe cases of ...

As an emergency medicine physician, Dr. Owais Durrani sees this issue regularly first-hand: When he clamps a pulse oximeter onto a patient's fingertip to measure their blood oxygen levels, the small ...

Apple's new Apple Watch Series 6 goes all-in on health care, including a new feature to measure blood oxygen level-- a vital sign that's been helpful monitoring COVID-19, among other things. Other ...

The longstanding problem of pulse oximeters providing less-accurate readings for people with dark skin tones got another look Friday from a panel of experts for the US Food and Drug Administration.

Many patients with severe cases of Covid-19 have been shown to have extremely low levels of oxygen in the blood. Others who have tested positive find themselves experiencing shortness of breath.