Which term is defined as a procedure used for measuring the concentration of oxygen in the blood?

Which term is defined as a procedure used for measuring the concentration of oxygen in the blood?

• A. Pulse Oximetry
• B. Alzheimer's Disease
• C. Anemia
• D. Angina

Answer: (A)

Oxygen measurement in the blood is done with pulse oximetry. This procedure uses a small sensor placed on a fingertip, toe, or earlobe and shines light through the skin to estimate how much hemoglobin is carrying oxygen. It gives an oxygen saturation reading (SpO2) and often heart rate, and it’s valued for being quick, noninvasive, and painless. The other terms refer to conditions or symptoms rather than a method for measuring oxygen in the blood: Alzheimer's Disease is a cognitive disorder, anemia is a blood condition that can affect oxygen delivery but is not a measurement method, and angina is chest pain from reduced heart blood flow, not a technique for measuring blood oxygen.

Oxygen measurement in the blood is done with pulse oximetry. This procedure uses a small sensor placed on a fingertip, toe, or earlobe and shines light through the skin to estimate how much hemoglobin is carrying oxygen. It gives an oxygen saturation reading (SpO2) and often heart rate, and it’s valued for being quick, noninvasive, and painless. The other terms refer to conditions or symptoms rather than a method for measuring oxygen in the blood: Alzheimer's Disease is a cognitive disorder, anemia is a blood condition that can affect oxygen delivery but is not a measurement method, and angina is chest pain from reduced heart blood flow, not a technique for measuring blood oxygen.