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肺动脉高压(pulmonary arterial hypertension,PAH)是由Dresdale[1]等于1951年首先正式提出。美国国立卫生研究院(NIH)规定PAH的血流动力学标准是:静息状态下肺动脉平均压>25mmHg(1mmHg=0.133Kpa),运动状态下肺动脉平均压>30mmHg,而肺毛细血管压或左房压<15mmHg[2]。
Pulmonary arterial hypertension (PAH) was first formally proposed by Dresdale [1] in 1951. The National Institutes of Health (NIH) prescribes hemodynamic criteria for PAH as a mean pulmonary artery pressure of> 25 mmHg (1 mmHg = 0.133 KPa) at rest and a mean pulmonary artery pressure of> 30 mmHg during exercise, whereas pulmonary capillary pressure or left Room pressure <15mmHg [2].