A pulse oximeter transmits light through a part of the body, often a fingertip. It can determine how much oxygen is in blood ...

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 ...

Pulse oximeters are small devices that use light to estimate the amount of oxygen carried in the blood. Several recent ...

Efforts to fix bias and accuracy problems with pulse oximeters have an uncertain future under the Trump administration. After years of concerns that pulse oximeters may provide less accurate ...