Which term refers to the oxygen saturation measurement in the blood noninvasively?

Which term refers to the oxygen saturation measurement in the blood noninvasively?

• A. Oximetry
• B. Respiration
• C. Metabolism
• D. Rhythm

Answer: (A)

Oximetry is the process of measuring how much oxygen is bound to hemoglobin in the blood, and it’s done without breaking the skin. A common finger probe uses light to estimate arterial oxygen saturation (SpO2), giving a quick, noninvasive read of how well the blood is carrying oxygen. That specific measurement is what oximetry refers to, which is why it’s the best choice here. Respiration refers to the act of breathing itself, the movement of air in and out of the lungs. Metabolism is the set of chemical reactions in cells that convert nutrients and oxygen into energy. Rhythm describes the pattern or regularity of something, like heart rate or breathing cycles. While related to how the body uses oxygen, none of these describe the noninvasive measurement of blood oxygen saturation like oximetry does.

Oximetry is the process of measuring how much oxygen is bound to hemoglobin in the blood, and it’s done without breaking the skin. A common finger probe uses light to estimate arterial oxygen saturation (SpO2), giving a quick, noninvasive read of how well the blood is carrying oxygen. That specific measurement is what oximetry refers to, which is why it’s the best choice here.

Respiration refers to the act of breathing itself, the movement of air in and out of the lungs. Metabolism is the set of chemical reactions in cells that convert nutrients and oxygen into energy. Rhythm describes the pattern or regularity of something, like heart rate or breathing cycles. While related to how the body uses oxygen, none of these describe the noninvasive measurement of blood oxygen saturation like oximetry does.