COPD 患者接受机械通气治疗时,常因气道阻力增加和肺组织弹性丧失,使呼气不完全,呼气末肺容量增加,产生呼气末肺泡正压,即内源性呼气末正压(PEEPi)。以下报道用呼吸机 PEEP 减小 PEEPi时,COPD 患者气道压、呼气流速-容量曲线和呼气末肺容量的变化。12例56～75岁的 COPD 患者,均行机械通气治疗,其中气管插管10例,气管切开2例。在用麻醉剂 COPD patients receiving mechanical ventilation treatment, often due to increased airway resistance and loss of lung tissue elasticity, so exhaled, end-expiratory lung capacity increased, resulting in end-expiratory positive pulmonary pressure, endogenous positive end-expiratory pressure (PEEPi). Changes in airway pressure, expiratory flow-volume curve, and expired end-expiratory volume in patients with COPD following PEEPi reduction with ventilator PEEP are reported below. Twelve patients aged 56-75 years with COPD underwent mechanical ventilation, including 10 tracheal intubation and 2 tracheotomy. In anesthetic