Question

Which statement is true about pulse oximetry?

A) It can be performed on any finger; nail polish does not have to be removed
B) It measures the percentage of hemoglobin that is oxygenated compared with the total amount of hemoglobin available
C) It provides both the oxygen saturation level and the patient's pulse rate
D) Both B and C are true

Answer 1

The statement that is true about pulse oximetry is: Both B and C are true. Pulse oximetry is a non-invasive method to measure the oxygen saturation level of hemoglobin and provides both the oxygen saturation level and the patient's pulse rate. Nail polish does not have to be removed for pulse oximetry on the finger.

Step-by-step explanation:

The statement that is true about pulse oximetry is: D) Both B and C are true.

Pulse oximetry is a non-invasive method to measure the oxygen saturation level of hemoglobin. It works by shining two different wavelengths of light through the finger and measuring the light absorbed by the oxygenated hemoglobin. This provides both the oxygen saturation level and the patient's pulse rate.

For pulse oximetry, it is usually applied to the finger, and nail polish does not have to be removed.