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长期缺氧往往使肺血管对缺氧的收缩反应(ＨＰＶ)降低,这是机体对慢性缺氧刺激的一种很重要的适应机制,有助于减轻或防止肺动脉高压和高原性心脏病的发生。因此探讨慢性缺氧改变肺血管反应性的机制有着十分重要的意义。作者从以下三方面对可能的机制进行了探讨。1)慢性缺氧可钝?
Chronic hypoxia tends to reduce the pulmonary vascular response to hypoxia (HPV), an important adaptive mechanism of the body to chronic hypoxia, which helps to reduce or prevent the occurrence of pulmonary hypertension and heart disease . So to explore the mechanism of chronic hypoxia changes in pulmonary vascular reactivity is of great significance. The author explores the possible mechanisms from the following three aspects. 1) chronic hypoxia can be blunt?