医院外发生室颤(VF)是猝死的重要原因,然而近25％的猝死病人事前无心脏病的症状.虽然日前对VF的发生机理尚未充分认识,但冠状动脉病(CAD)的心肌缺血被认为是大部份VF发作的基础。为了查明心肌缺血是否是医院外VF病人的发病机理,作者对15例医院外发生VF存活病人于次极量运动时测定左室功能、血流动力学指标和监测心电图给以估计。方法与结果:15例院外发生VF存活的病人, VF is a major cause of sudden death outside the hospital, yet nearly 25% of sudden death patients have no previous symptoms of heart disease. Although the pathogenesis of VF has not been fully understood before, myocardial ischemia of coronary artery disease (CAD) Considered to be the basis of most VF episodes. To determine whether myocardial ischemia is the pathogenesis of VF outside the hospital, the authors assessed left ventricular function, hemodynamic parameters, and monitoring electrocardiogram in 15 patients with VF survivors outside the hospital during submaximal exercise. Methods and Results: Fifteen patients with VF survived outside the hospital,