A woman's life-saving treatment was critically delayed when her long, thick press-on nails obstructed a pulse oximeter during a heart attack. Medical staff had to call a manicurist to remove them.

Clipped to a fingertip, a pulse oximeter uses light beams to analyze your heart rate and the amount of oxygen being carried in your bloodstream. Normal levels in otherwise-healthy adults range between ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. The doctors and nurses didn’t believe Tomisa Starr was having trouble breathing. Two years ago, Starr, 61, of Sacramento, ...