electron beam computed tomography is a noninvasive method to monitor oxygen saturation levels in arterial blood.
electron beam computed tomography is a noninvasive method to monitor oxygen saturation levels in arterial blood.
a noninvasive method to monitor oxygen saturation levels in arterial blood is?
electron beam computed tomography
pulse oximetry









































pulse oximetry is a noninvasive method for monitoring a person's oxygen saturation (s). though its reading of peripheral oxygen saturation (sp) is not always identical to the more desirable reading of arterial oxygen saturation (sa) from arterial blood gas analysis, the two are correlated well enough that the safe, convenient, noninvasive, inexpensive pulse oximetry method is valuable for measuring oxygen saturation in clinical use.
pulse oximetry
under normal conditions in adult humans at rest, hemoglobin in blood leaving the lungs is about 98–99% saturated with oxygen, achieving an oxygen delivery between 950 and 1150 ml/min to the body. in a healthy adult at rest, oxygen consumption is approximately 200–250 ml/min, and deoxygenated blood returning to the lungs is still roughly 75% (70 to 78%) saturated. increased oxygen consumption during sustained exercise reduces the oxygen saturation of venous blood, which can reach less than 15% in a trained athlete; although breathing rate and blood flow increase to compensate, oxygen saturation in arterial blood can drop to 95% or less under these conditions. oxygen saturation this low is considered dangerous in an individual at rest (for instance, during surgery under anesthesia). sustained hypoxia (oxygenation less than 90%), is dangerous to health, and severe hypoxia (saturations less than 30%) may be rapidly fatal.
blood