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原发性心电病为心脏结构正常而心脏电紊乱的疾病。长QT综合征则为第一个被发现的原发性心电疾病，它含有13种亚型。根据近三年国外文献，复习长QT综合征的遗传学、电生理学、临床学及其亚型的研究进展。“,”Primary electrical cardiac diseases are a group of diseases which there were cardiac electrocal disorders with normal cardiac structure,long QT syndrome was first primary electrical cardiac disease discovered.Genetics,electrophsyology,clinical science and its sub-type were reviewed based on foreign literatures of recent 3 years in this paper.