相較於正常換氣(normal ventilation),過度換氣(hyperventilation)時可見:①肺泡內氧分壓(\mathrm{P_{O_{2}}})顯著上升 ②肺泡內二氧化碳分壓(\mathrm{P_{CO_{2}}})顯著下降 ③體動脈血中二氧化碳總含量(total content of \mathrm{CO}_{2})顯著下降
\mathrm{P_{O_{2}}}
\mathrm{P_{CO_{2}}}
\mathrm{CO}_{2}
僅①②
僅②③
僅①③
①②③