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高原低氧环境对人类体循环和肺循环压的影响有所不同，其原因是否与各自血管对血管活性物质的反应不同有关？本文用生物测定法测定并对比了慢性缺氧大鼠肺动脉和体动脉的舒张效应和收缩效应的变化，并对其变化机理作初步讨论。将实验鼠随机分为常氧对照组和低压缺氧组，后者置
The effects of plateau hypoxia on human systemic circulation and pulmonary circulation pressure are different, the reason is related to the different vascular response to different vasoactive substances? In this paper, we measured and compared the changes of diastolic and contractile effects of pulmonary and arterial arteries in rats with chronic hypoxia by bioassay, and discussed its changing mechanism. The rats were randomly divided into normoxic control group and hypobaric hypoxia group, the latter set