Mechanical ventilation is an important means of treatment in severe cases, the need when these patients are related to inspection, change one's major machine nosocomial transhipment, transit in patients with increased risk of complications, serious and even death. Although transshipment wil make preparations for the corresponding before, but the patient in a critical condition is complex, instruments and equipment malfunctions, the influence of the environment and human factors stil has the accident, cause the failure of transshipment.%机械通气是治疗重症患者的重要手段，对这些患者进行相关检查、转科时需要带机院内转运，转运途中患者发生并发症的风险增加，严重者甚至死亡。虽然转运前会做好相应的准备工作，但受患者病情危重复杂、仪器设备意外故障、环境和人为因素的的影响仍有意外发生，导致转运失败。
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