Which tests are used to differentiate between obstructive and restrictive lung disorders?
A) MVV, FVC, FEV1/FVC ratio
B) FEV1, FVC, FRC
C) FVC, FEV1, FEV1/FVC ratio
D) FEV1, MVV, and TLC

Question

Quizplus · Accepted Answer

The FVC (Forced Vital Capacity), FEV1 (Forced Expiratory Volume in the first second), and the FEV1/FVC ratio are key parameters used to differentiate between obstructive and restrictive lung disorders. In obstructive diseases, the FEV1/FVC ratio is typically reduced due to a disproportionate reduction in FEV1. In restrictive diseases, both FEV1 and FVC are reduced, but the FEV1/FVC ratio remains normal or is increased.

Which Tests Are Used to Differentiate Between Obstructive and Restrictive