Question

What does FEV1/FVC measure? What factors may affect FEV1/FVC?

a. Lung capacity; Smoking
b. Airflow obstruction; Age
c. Blood oxygen levels; Exercise
d. Respiratory rate; Altitude

Answer 1

The FEV1/FVC ratio measures lung function and can diagnose lung diseases such as asthma or fibrosis.

Step-by-step explanation:

The ratio FEV1/FVC measures lung function and is used to diagnose lung diseases such as asthma, emphysema, and fibrosis. A high FEV1/FVC ratio indicates stiff lungs and lung fibrosis, while a low ratio suggests resistance in the lungs, characteristic of asthma.