猝死,是对人类文明及医学科学的一个重大挑战。据估计,在美国每天平均约有1,200人发生猝死,相当于每分钟有一个人猝死,平均年龄为59岁,其90％的病例与冠心病有关。冠心病猝死(以下简称SCD)为美国最常见的死亡原因之一。有报道表明,冠心病最常见的表现既不是心绞痛,也不是急性心肌梗塞,而是SCD,它往往是冠 Sudden death is a major challenge to human civilization and medical science. It is estimated that on average about 1,200 sudden deaths occur each day in the United States, the equivalent of one sudden death per minute, with an average age of 59 years. About 90% of cases are related to coronary heart disease. Sudden death from coronary heart disease (hereinafter referred to as SCD) is one of the most common causes of death in the United States. It has been reported that the most common manifestation of coronary heart disease is neither angina nor acute myocardial infarction, but SCD, which is often the crown