本文报告一种新的通气模式：使用ＢｉＰＡＰ压力支持通气治疗２０例肺心病合并Ⅱ型呼吸衰竭病人．并以同期同样标准的１０例病人作为对照．治疗前后均做血气分析，结果显示ＢｉＰＡＰ压力支持通气有明显改善通气提高ＰａＯ２、降低ＰａＣＯ２效果，鉴于它的无创性，有利于临床推广应用。本文并对压力支持通气的原理、指征、优缺点、注意事项等进行了讨论。 This article reports a new ventilatory mode in which 20 patients with pulmonary heart disease and type 2 respiratory failure were treated with BiPAP pressure support ventilation. 10 patients with the same standard over the same period as a control. Blood gas analysis before and after treatment showed that BiPAP pressure support ventilation was significantly improved ventilation increased PaO2, reduce PaCO2 effect, in view of its non-invasive, is conducive to clinical application. This article also discusses the principles, indications, advantages and disadvantages, precautions, etc. of pressure support ventilation.