无器质性心脏病者QT离散度与室性心律失常的关系  

The relationship between QT dispersion and ventricular arrhythmias in patients without organic heart diseases

作　　者：刘德平[1] 董蓉[1] 郭正红[1] 杨春英[1] 乔巍巍[1] 

机构地区：[1]北京医院心内科,100730

出　　处：《临床心电学杂志》1999年第4期210-211,共2页Journal of Clinical Electrocardiology

摘　　要：目的　评价无器质性心脏病者ＱＴ离散度（ＱＴＤ）与室性心律失常的关系。方法　于ＤＣＧ检查前进行常规１２ 导ＥＣＧ检查，测量ＱＴ间期，计算ＱＴＤ，ＱＴｃｄ（校正的ＱＴＤ），根据２４ 小时ＥＣＧ检出的室性心律失常情况，分为无室早组，室早＜ １００ 次，室早≥１００ 次组，成对室早组及无成对室早组，比较各组病人之ＱＴＤ，ＱＴｃＤ。结果　无室早组，室早＜ １００次，室早≥１００次组，成对室早组及无成对室早组之ＱＴＤ分别为２８．９±１１．１ｍ ｓ，２９．５±１２．６ｍ ｓ，２７．８±１１．８ｍ ｓ，２９．１±９．３ｍ ｓ，２８．９±１０．９ｍ ｓ．ＱＴｃＤ分别为３５．３±１３．２ｍ ｓ，３５．８±１４．０ｍ ｓ，３６．２±１３．７ｍ ｓ，３６．５±１２．９ｍ ｓ，３５．７±１１．４ｍ ｓ，各组病人之ＱＴＤ，ＱＴｃＤ比较均无显著差异，Ｐ＞ ０．０５。结论　无器质性心脏病者ＱＴＤ，ＱＴｃＤ与室性早搏的多少及有无成对室早无关。Objective To evaluate the relationship of between QT dispersion(QTD) and ventricular arrhythmias.Methods 100 consective cases of patients suspected of arrhythmias without organic heart diseases were analyzed.12 lead electrocardiogram(ECG) was recorded before 24 hour dynamic electrocardiogram(DCG) recording.QTD and QTcD were defined as maximal QT -minimal QT and maximal QTc -minimal QTc respectively.Patients were divided into 5 groups based on the presence or absence of ventricular arrhythmias,group A,no ventricular premature contraction(PVC),group B,PVCs less than 100 beats per 24 hours,group C,PVCs at least 100 beats,group D,with couple PVCs,group E,with PVCs but without couplets.Results QTD was 28.9±11.1ms,29.5±12.6ms,27.8± 11.8ms,29.1±9.3ms,28.9±10.9ms in group A,group B,group C,group D and group E respectively,QTcD was 35.3±13.2ms,35.8±14.0ms,36.2±13.7ms,36.5±12.9ms,35.7±11.4ms in each group gespectively.No significant differences of QTD and QTcD were found between any two groups( P > 0.05).Conclusions There was no relationship between QTD(and QTcD) and ventricular arrhythmias in patients without organic heart diseases.

关 键 词：QT间期 室性 心律失常 

分 类 号：R541.7[医药卫生—心血管疾病]