长QT综合征(LQTS)是指心电图上表现为QT间期延长、ST-T波异常,易产生恶性室性心律失常的一组综合征。我院1995至2005年诊治的危重新生儿中,有7例出现了继发性QT间期延长并引发2:1房室传导,现将其临床诊断及治疗分析报告如下。资料与方法一、临床资料7例患儿中,早产儿5例,新生儿 Long QT Syndrome (LQTS) is a group of syndromes characterized by prolonged QT interval, abnormal ST-T wave and malignant ventricular arrhythmia on ECG. Our hospital from 1995 to 2005 diagnosis and treatment of critically ill newborns, there are 7 cases of secondary QT prolongation and lead to 2: 1 atrioventricular conduction, now its clinical diagnosis and treatment analysis report as follows. Materials and Methods First, the clinical data 7 cases of children, 5 cases of premature children, newborns