What is Inspiratory Reserve Volume (IRV)?

Inspiratory Reserve Volume (IRV) is the air a person can forcefully inhale after a normal tidal volume inhalation. Tidal volume refers to the normal air breathed in and out during regular, quiet breathing. Inspiratory Reserve Volume represents the additional air that can be inhaled beyond the tidal volume when a person takes a deep breath. The inspiratory reserve volume is essential in assessing lung capacity and respiratory health. It provides information about an individual's respiratory reserve and can be relevant in various medical contexts, such as pulmonary function tests.