本刊1980年第10期刊载了我写的“低氧血症”一文,今再重点谈谈氧疗法治疗慢性阻塞性肺气肿和肺心病的问题。一、氧合作用在正常情况下,肺动脉的混合静脉血流过肺泡时进行氧合作用,然后形成动脉血。其肺泡通气量(V)和肺泡毛细血管的血流量(Q)有一定比值,即V/Q(每分钟4升/每分钟5升)=0.8。如肺泡通气量降低,即V/Q比值减小,则流过的血液未得到很好氧合,便发生低氧血症。吸入空气 I published in 1980 No. 10 published “hypoxemia,” a article, and then focus on oxygen therapy for the treatment of chronic obstructive pulmonary disease and cor pulmonale problems. First, the oxygenation Under normal circumstances, pulmonary arterial mixed venous blood flow through the alveolar oxygenation, and then the formation of arterial blood. The alveolar ventilation (V) and the alveolar capillary blood flow (Q) have a certain ratio, namely V / Q (4 liters per minute / 5 liters per minute) = 0.8. Such as alveolar ventilation decreased, that V / Q ratio decreases, then the blood flow is not well oxygenated, hypoxemia occurs. Inhale air