气管套管痰痂或血痂阻塞,是机械呼吸的严重合并症,不及时清除可致死。内套管阻塞易引起警惕并清除,而外套管阻塞少见,不易引起注意,初期无明显症状,一旦出现呼吸困难,则病情急骤恶化并很快死亡。本文报告2例呼吸机应用48小时内发生外套管阻塞致死,并就其意外的预防及急救进行讨论。1 病例简介 Tracheal tube phlegm or blood clots, is a serious complication of mechanical respiration, can not be promptly removed to death. Blocking within the casing easily lead to vigilance and clear, while the outer casing obstruction is rare, not easy to attract attention, the initial no obvious symptoms, in the event of dyspnea, the condition deteriorated rapidly and died soon. This article reports 2 cases of ventilator application within 48 hours of occlusion of the outer tube to death, and its accident prevention and first aid are discussed. 1 case brief introduction