What is the definition of forced vital capacity?

Forced vital capacity (FVC) refers to the maximum amount of air that a person can forcibly exhale after taking the deepest possible breath. This measurement is crucial in evaluating lung function, as it reflects the total volume of air that can be expelled from the lungs following a full inhalation. By assessing FVC, healthcare professionals can gain insights into a person's respiratory health and identify potential issues such as restrictive or obstructive lung conditions.

Understanding the concept of forced vital capacity is essential in the context of pulmonary function tests, which are employed to monitor and diagnose respiratory disorders. The value obtained from an FVC test can help determine the functioning capacity of the lungs, indicating how efficiently they can move air in and out, which is vital for overall oxygenation in the body.