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Minute ventilation is the volume of gas inhaled or exhaled from a person's lungs per minute. It is an important parameter in respiratory medicine due to its relationship with blood carbon dioxide levels. It can be measured with devices such as a Wright respirometer or can be calculated from other known respiratory parameters. Although minute volume can be viewed as a unit of volume, it is usually treated in practice as a flow rate. Typical units involved are 0.5 L × 12 breaths/min = 6 L/min.
Several symbols can be used to represent minute volume. They include V ˙ {\displaystyle {\dot {V}}} or Q , MV, and VE.
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