Which pulmonary function test in essence assesses the status of the alveolar-capillary membrane?
A) DLCO
B) PEFR
C) MVV
D) bronchial provocation test

Question

Quizplus · Accepted Answer

The DLCO (diffusing capacity of the lungs for carbon monoxide) test is the pulmonary function test that assesses the status of the alveolar-capillary membrane. This test measures the ability of the lung to transfer carbon monoxide from inspired air into the bloodstream, which reflects the surface area and thickness of the alveolar-capillary membrane. PEFR (peak expiratory flow rate) measures the maximum speed of air exhalation and is used to assess airway obstruction. MVV (maximal voluntary ventilation) measures the maximum amount of air a person can breathe in and out in one minute and is used to assess overall lung function. Bronchial provocation test is used to diagnose airway hyperresponsiveness.

Which Pulmonary Function Test in Essence Assesses the Status of the Alveolar-Capillary