徒手心肺复苏(Cardiopulmonary resuscitation,CPR)是抢救生命最基本的技术和方法,对心跳、呼吸骤停病人实施及时有效的抢救可以明显提高其生存率[1]。猝死大多发生在院外,在现场能否正确实施CPR显得十分重要。如果第一目击者能够快速、正确地实施心肺复苏术,将提高院外心脏骤 Cardiopulmonary resuscitation (CPR) is the most basic technique and method to save lives. The timely and effective rescue of heartbeat and respiratory arrest patients can significantly improve the survival rate [1]. Sudden death occurs mostly outside the hospital, the correct implementation of CPR in the field is very important. If the first eyewitness can quickly and correctly implement CPR, will improve the heart outside the hospital