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心源性猝死(SCD)亦被称为心脏猝死或心脏卒中,系指由于心脏疾病引起的突然和意外的死亡。所谓“突然”是指死亡发生在24小时内。并可将其分为“很急”和“急性”两类。前者指死亡发生在1小时内,后者则指死亡发生于1～24小时内。少数病人死亡发生在几秒钟内,称为“即刻死亡”。但亦有将猝死的时间限制于30秒、1小时、6小时或12小时内世界卫生组织则规定为起病后6小时内的死亡。心源性猝死是一个严重的健康问题。据估计在美国每年约有30～40万人因“心源性猝死”死亡。其中约10万人死于65岁前。而且在心脏抑制后存活的病人中,有再发心室颤动的倾向,其死亡率在发作后的下一年为26%,在第2年为36%。
Sudden cardiac death (SCD), also known as sudden cardiac death or stroke, refers to sudden and unexpected death due to heart disease. The so-called \"sudden\" refers to the death occurred within 24 hours. And can be divided into \"very urgent\" and \"acute\" two categories. The former refers to the death occurred in 1 hour, the latter refers to the death occurred in 1 to 24 hours. A few patients die in seconds, called \"immediate death.\" However, there are also restrictions on the time of sudden death to 30 seconds, 1 hour, 6 hours or 12 hours, while the World Health Organization provides for the death within 6 hours after onset. Sudden cardiac death is a serious health problem. It is estimated that in the United States each year about 300,000 to 400,000 people died of \"sudden cardiac death.\" About 100,000 of them died before the age of 65. Furthermore, there is a tendency for ventricular fibrillation to recur after cardiorespiratory arrest, with a mortality rate of 26% in the year following the onset and 36% in the second year.