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肺的通气或(和)换气功能障碍导致缺氧和CO_2潴留达到一定程度,从而引起一系列病理生理改变和临床表现,称为呼吸衰竭(简称呼衰)。通常以PaO_2<8kPa(60mmhg),或伴有PaCO_2>6.67kPa(50mmHg)为诊断标准,但必须将右一左分流的先天性心脏病引起的血气异常和呼吸困难排除在外。
Lung ventilation or (and) ventilation dysfunction leading to hypoxia and CO2 retention to a certain extent, causing a series of pathophysiological changes and clinical manifestations, known as respiratory failure (referred to as respiratory failure). Usually PaO_2 <8kPa (60mmhg), or with PaCO_2> 6.67kPa (50mmHg) as the diagnostic criteria, but must be right to left shunt congenital heart disease caused by abnormal blood gases and dyspnea excluded.