What is the minimum percent of the forced vital capacity that healthy people can exhale in the first 1 second?

Question

Quizplus · Accepted Answer

Healthy people can usually exhale at least 70% of their forced vital capacity in the first 1 second, which is referred to as the forced expiratory volume in 1 second (FEV1). This value can be used to diagnose and monitor various respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD). Options A, B, and D have FEV1 values lower than the typical range for healthy individuals.

What Is the Minimum Percent of the Forced Vital Capacity