Question

which of the following diagnostic procedures monitors a patient while sleeping to identify sleep apnea?
a pulmonary function test
b ventilation - perfusion scan
c polysomnography
d bronchoscopy

Explanation:

Polysomnography is a comprehensive test that monitors a patient during sleep to detect sleep - related disorders like sleep apnea by tracking various physiological parameters such as brain waves, eye movements, heart rate, and breathing patterns. A pulmonary function test measures lung function but not during sleep for sleep apnea. A ventilation - perfusion scan is used to assess blood flow and air movement in the lungs for conditions like pulmonary embolism. Bronchoscopy is an examination of the airways.

Answer:

C. polysomnography