It is defined as VA=(Tidal Volume−Dead Space Volume)×Respiratory RateVA=(Tidal Volume−Dead Space Volume)×Respiratory Rate Alveolar ventilation (VA): The amount of gas per unit of time that reaches the alveoli and becomes involved in gas exchange. It can be defined as VE=Tidal Volume×Breaths Per MinuteVE=Tidal Volume×Breaths Per Minute Minute ventilation (VE): The amount of air entering the lungs per minute. The three main types of ventilation rates used in respiratory physiology are: The volume of air can refer to tidal volume (the amount inhaled in an average breath) or something more specific, such as the volume of dead space in the airways. Ventilation is generally expressed as volume of air times a respiratory rate. In respiratory physiology, the ventilation rate is the rate at which gas enters or leaves the lung.
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