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心电图上连续2个或以上的导联出现J波抬高≥0.1m V是一种常见现象,称为过早复极现象(ER)。如伴有相应的临床症状则称为J波综合征。特发性室颤(IVF),以青年男性发病为主、心脏结构完全正常、但突发心室颤动、原因不明,是年轻人心脏性猝死的重要原因。在IVF患者中相当一部分人心电图表现为Ⅱ、Ⅲ、a VF导联J波和ST段的抬高(图1)。人们对J波的产生机制发生了极大的兴趣。目前认为J波综合征并不都是良性,IVF是J波综合征的一种。
J-wave elevation ≥0.1mV appears on 2 or more consecutive ECG leads. It is a common phenomenon called premature repolarization (ER). If accompanied by the corresponding clinical symptoms are called J wave syndrome. Idiopathic ventricular fibrillation (IVF), mainly young male onset of cardiac structure is completely normal, but sudden ventricular fibrillation, unexplained, is an important cause of sudden cardiac death in young people. A significant proportion of patients with IVF have electrocardiograms of elevation of the J wave and ST segment of leads II, III, a VF (Figure 1). People have a great interest in the mechanism of J wave generation. At present, not all J wave syndrome is benign, IVF is a kind of J wave syndrome.