In healthy people, pulmonary venous blood has a PO2 about 5 mmHg lower than is seen in the alveoli, which is mainly caused by:
In healthy people, pulmonary venous blood has a PO2 about 5 mmHg lower than is seen in the alveoli, which is mainly caused by:
competition with CO2 diffusion.
asthma.
diffuse interstitial fibrosis.
ventilation-perfusion inequalities.
pulmonary edema.
