潮气量是指平静呼吸时每次吸入或呼出的气量。对于健康的年轻人而言，潮气量为每次呼吸500毫升，或者是身体重量乘以7毫升每千克

1. ↑ Beardsell, I et al: MCEM Part A:MCQs, page 33, Royal Society of Medicine Press, 2009

Tidal volume is the lung volume representing the normal volume of air displaced between normal inhalation and exhalation when extra effort is not applied. In a healthy, young human adult, tidal volume is approximately 500 mL per inspiration or 7 mL/kg of body mass.