各种原因引起心跳呼吸骤停在院前抢救中经常遇到，现场及时、有效的心肺脑复苏术是复苏成败的关键。本文根据我中心1991年10月～1996年1月院前抢救的记录资料，对其中42例院前心跳呼吸骤停病人作初步分析，旨在对影响院前心肺脑复苏成败的有关因素进行探讨。一、临床资料（一） Various causes of sudden cardiac arrest often encountered in the hospital rescue, timely and effective cardiopulmonary brain resuscitation is the key to the success or failure of recovery. This article based on our center from October 1991 to January 1996 records of hospital care, of which 42 cases of prehospital heartbeat and respiratory arrest patients for preliminary analysis, to influence the pre-hospital cardiopulmonary resuscitation success or failure of the factors discussed . First, the clinical data (a)