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目的重新认识早期复极综合症的心电图变化及临床意义。方法回顾分析门(急)诊就诊和健康体检发现的79例早期复极综合症(ERS)患者的心电图变化及临床特点。结果79例ERS患者都表现一种特发性的心电图改变，以明显的J波和ST段上斜型抬高为特征，窦性心动过缓常见，QRS间期相对延长，终末部可见切迹。35例患者表现有胸闷、胸痛、心悸，其中2例最终诊断冠心病，1例诊断为心包炎，44例无临床症状。结论 ERS为临床常见的一种心电图变异，预后一般良好，须防过度治疗。但近年来一些更深入的临床研究与报道揭示：ERS患者发生特发性心室颤动和心源性猝死的危险性增加，因此，ERS并不总是良性的，如何鉴别其良、恶性是对早期复极综合征重新认识的重要挑战，对筛查出的极少数恶性ERS患者更应密切随访、预防和治疗，避免心脏性猝死的发生。“,”Objective Re-understanding the changes of ECG of early repolarization syndrome and its clinical implications.Methods Retrospective analysis of 79 cases ofelectrocardiographic changes of patients found in the ER and health examination with early repolarization syndrome (ERS)and the clinical characteristics of those patients.Results Al 79 cases of ERS patients showed a change of idiopathic ECG,characterized by the apparent oblique type elevation in J wave and ST segment,sinus bradycardia being in common,QRS interval longer and the end of visible notch.35 cases of patients with chest tightness,chest pain,palpitations,including 2 cases with final diagnosis of coronary heart disease,1 case diagnosed as pericarditis,44 cases no clinical symptoms.Conclusion ERS is a common clinical ECG variation,general y with good prognosis,over treatment.But in recent years some of the more in-depth clinical research and reports revealed:the risk of death of ERS patients with idiopathic ventricular fibril ation and sudden cardiac death increased,therefore,the ERS is not always benign,how to dif erentiate the benign and the malignant is an major chal enge for early repolarization syndrome,a handful of malignant ERS patients screened should be fol owed closely with prevention and treatment measures,to avoid the occur ence of sudden cardiac death.