the amount of air breathed in 1 minute.

Minute Ventilation = Tidal Volume x Respiratory Rate

Tidal Volume x Respiratory Rate

Respiratory minute volume refers to the volume of breath per minute. During exercise, this amount increases up to 20 to 30 times the normal value. Exercising regularly improves lung performance and makes breathing easier.

You take the patients Respiratory Rate and divide it by the tidal volume averaged over 1 minute.

Respiratory volume or respiratory minute volume is the volume of air which can be inhaled or exhaled from a person's lung in one minute.It is normally consider when a person on a ventilator for breathing problem due to sickness or injury. It is calculated by taking the tidal volume( or lung volume ) and multiplying it by the respiratory rate( the number of breaths per minute a person is taking).