Pulse oximetry is a noninvasive, painless test that measures the oxygen saturation level of your blood. Here’s how it works and what the readings mean.

However, anyone with a tracheostomy who experiences breathing difficulty or has signs of low oxygen levels needs urgent medical attention.

A low-oxygen environment — similar to the thin air found at Mount Everest base camp — can protect the brain and restore ...

Don't ignore these 5 warning signs of dangerously low blood levels. Early recognition could prevent life-threatening complications.

TOFPA is a congenital heart defect that makes it difficult for blood low in oxygen to reach your lungs. It may be suspected during pregnancy ultrasounds or detected by signs of low oxygen after birth.

Maryland's Chesapeake Bay saw historically low oxygen levels in June, after heavy rain in May, according to the state Department of Natural Resources (DNR).

Low blood pressure, or hypotension, often goes unnoticed due to symptoms mimicking other conditions. Key signs include ...