Blood oxygen levels refer to the amount of oxygen circulating in the blood. Normal blood oxygen levels fall between 75 and 100 millimeters of mercury (mm Hg) on arterial blood gas (ABG) test results.

Vital signs, those fluorescent green numbers that beep, ding, and dash across black screens on the monitors in hospital rooms, have become a new source of angst during the coronavirus pandemic. One of ...

For most people, a normal pulse oximeter reading is between 95% and 100%, with readings below 90-92% generally considered low and requiring medical attention. They are known to be affected by several ...

Early in the pandemic, scores of Americans bought pulse oximeters to help determine how sick they were while infected with COVID-19, but new research finds the devices often miss dangerously low blood ...

Covid-19 made pulse oximeters an even more important tool for measuring the amount of oxygen in the bloodstream than they had been before. Widely used in hospitals and health systems, these small ...

As a triple threat of respiratory illnesses – flu, Covid-19 and respiratory syncytial virus, known as RSV – sweeps the United States, emergency departments are using one small tool more than usual to ...

If someone’s blood oxygen level falls below 60 mm Hg, there may not be enough oxygen reaching the body’s vital organs. This can lead to symptoms such as shortness of breath and dizziness. This article ...