Tidal Volume (TV)

Tidal volume (TV) is the amount of air a person breathes in or out during normal, resting breathing. It represents the volume of air exchanged with each breath under typical conditions, usually around 500 milliliters for an average adult. This measurement helps healthcare professionals assess how well the lungs are functioning and provides insight into respiratory health. Tidal volume varies based on activity level, body size, and health status, and it is different from larger breaths taken during deep breathing or coughing.