近年临床观察证实,原发性Q—T间期延长综合征,低血钾、低血镁或低血钙等电解质紊乱,心肌损害,心肌梗塞,二尖瓣脱垂,颅脑疾病,以及异搏定,缓脉灵、双异丙吡胺、乙胺碘呋酮、奎尼丁、普鲁卡因酰胺、氯喹、丙咪嗪、酚噻嗪、灭虫宁、吐根碱和砷剂等许多药物,均可致Q—T间期延长,引起延迟复极综合征。其可产生扭转性室速、室颤、晕厥甚至猝死。重视Q—T间期 In recent years, clinical observation confirmed that the primary Q-T prolongation syndrome, hypokalemia, hypomagnesemia or hypocalcemia and other electrolyte disorders, myocardial damage, myocardial infarction, mitral valve prolapse, craniocerebral disease, and differences Paclitaxel, Phenazine, Phenothiazine, Pendimethalin, Ipomoea, Arsenic, etc. Many drugs, can lead to prolonged Q-T interval, causing delayed repolarization syndrome. It can produce torsades de pointes, ventricular fibrillation, syncope and even sudden death. Emphasis on Q-T interval