Question

If this value is less than 70% of predicted, it indicates the presence of restrictive lung disease

A) forced vital capacity
B) peak expiratory flow rate
C) forced expiratory volume 1 second

Answer 1

The ratio of FEV1 to FVC is used to diagnose lung diseases, including restrictive lung disease.

Step-by-step explanation:

The ratio of FEV1 (the amount of air that can be forcibly exhaled in one second after taking a deep breath) to FVC (the total amount of air that can be forcibly exhaled) is used to diagnose lung diseases. In the case of restrictive lung disease, the FEV1/FVC ratio will be higher than 70% of predicted. This indicates that the person has restrictive lung disease.