在近代复苏技术和生命支持治疗应用于临床之前,对于医院外(如家庭、厂矿、大街等现场)突然发生危及生命的急病和创伤,常常是不待病情稳定就送到附近的医院。自1950年起,由于病理生理学、治疗学和心肺脑复苏技术的发展,严重创伤、窒息,心脏病突然发作和各种危重病的死亡率已显著降低。例如日本大阪府的成人病中心,1979年用心脏病强化治疗单元(CCU)抢救50名 Before modern recovery techniques and life support treatments are applied to the clinic, emergency and life-threatening emergencies and traumatic accidents outside the hospital (such as homes, factories and mines, streets, etc.) are often sent to nearby hospitals without being stable. Since 1950, due to the development of pathophysiology, therapeutics and cardiopulmonary resuscitation, the mortality rate of severe trauma, asphyxia, sudden heart attack and various critically ill diseases has been significantly reduced. Such as the Japan Center for Adult Disease in Osaka Prefecture, and the rescue of 50 patients with the Cardiac Intensive Treatment Unit (CCU) in 1979