blóðsúrefnisþrýstingur
Blóðsúrefnisþrýstingur, often abbreviated as PaO2, refers to the pressure exerted by dissolved oxygen in arterial blood. It is a crucial measurement in assessing the effectiveness of the lungs in oxygenating the blood and the body's ability to transport oxygen to the tissues. A normal PaO2 level in healthy adults breathing room air at sea level typically ranges from 80 to 100 millimeters of mercury (mmHg). This value can fluctuate based on factors such as altitude, the fraction of inspired oxygen (FiO2), and an individual's physiological state.
Low PaO2 levels, known as hypoxemia, can indicate various respiratory or circulatory problems. These may include