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目的探讨心电图检查在低钾性周期性麻痹的诊断价值。方法回顾性分析24例低钾性周期性麻痹患者临床资料。结果24例患者血清钾均低于正常值,最低1.53mmoL/L,血钾为1.5~2.0mmoL/L者7例,2.0~3.5mmoL/L者17例。心电图检查有异常改变者18例,主要表现ST段压低、T波改变、双相倒置、100豫U波出现、TU融合或伴有频发性室性早搏或伴房室传导阻滞。结论心电图检查对低钾周期性麻痹诊断敏感度较高,对明确临床诊断和及时治疗有着重要的指导意义。“,”Objective To investigate the electrocardiogram examination in the diagnostic value of low potassium periodic paralysis.Methods A retrospective analysis of clinical data of 24 patients with low potassium periodic paralysis.Results 24 patients serum potassium were below normal,lowest 1.53 tendency for L,potassium is 1.5~2.0 tendency/L in 7 cases,17 cases tendency of 2.0~3.5 L. Abnormal changes of ecg examination has 18 cases,mainly low ST segment and T wave change,dual phase inversion,100%of U wave,TU fusion or accompanied by frequent ventricular premature beat or with atrioventricular block.Conclusion Ecg examination of high sensitivity,low potassium periodic paralysis of clear has important guiding significance .