Rick Broida is the author of numerous books and thousands of reviews, features and blog posts. He writes CNET's popular Cheapskate blog and co-hosts Protocol 1: A Travelers Podcast (about the TV ...

The pulse oximeter is a small, clip-like device. It attaches to a body part, most commonly to a finger. Medical professionals often use them in critical care settings like emergency rooms or ...

The theory behind a pulse oximeter relies on the fact that hemoglobin absorbs red and infrared light differently based on its oxygenation levels. By shining a red and IR LED through a finger onto ...

Factors that might adulterate a pulse oximeter reading According to the World Health Organization (WHO), nail varnish or any kind of pigment on the finger, user's movement, bright light on the ...

These researchers and other experts have raised concerns that the pulse oximeter readings via fingertip of people with darker skin pigment often show flawed results. The issue has already led to ...

Pulse oximeters are electronic devices that clamp onto a patient’s finger to estimate their blood oxygen levels and pulse rate. Prescription and over-the-counter versions of these devices became ...