What is minute ventilation?

Minute ventilation is the total volume of air that is breathed in per minute. It is calculated by multiplying the tidal volume (the amount of air inhaled and exhaled during a normal breath) by the respiratory rate (the number of breaths taken per minute). Minute ventilation is an important measure of respiratory function and can be used to assess how efficiently the lungs are able to exchange oxygen and carbon dioxide with the environment.

Minute ventilation can be affected by a variety of factors, including physical activity, lung capacity, and respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD). Monitoring minute ventilation is useful in clinical settings for diagnosing and managing respiratory diseases, as well as assessing a patient's response to treatment.

In healthy individuals, minute ventilation typically ranges from 5-10 liters per minute at rest and can increase significantly during exercise or physical exertion. Abnormalities in minute ventilation can indicate underlying respiratory issues and may require further evaluation and treatment.