1背景心脏性猝死(SCD)是院外心血管疾病死亡的主要原因,约占60%以上[1]。在美国等西方国家,发生率约为40/10万至90/10万,美国每年约有30~45万人死于SCD[1]。基于国内一项对四个地区的SCD的流行病学统计报道,我国SCD的发病率约为41.6/10万,据此估算,我国每年约有54万人死于SCD[2]。大多数SCD是由快速室性心动过速(室速)、心室颤动(室颤)所致[1],临床上有效终止室速、室颤 Background The sudden cardiac death (SCD) is the leading cause of cardiovascular death in hospital, accounting for more than 60% [1]. In the United States and other western countries, the incidence is about 40/10 to 90/10 million. In the United States, about 300 to 450 000 people die each year from SCD [1]. Based on a national epidemiological report of SCD in four regions in China, the incidence rate of SCD in China is about 41.6 / 100000. Based on this, about 540,000 people die of SCD each year in our country. [2] Most of the SCD is caused by rapid ventricular tachycardia (VT), ventricular fibrillation (VF) [1], clinically effective termination of ventricular tachycardia, ventricular fibrillation