原发性高血压的QT离散度分析

ANALYSIS OF QT DISPERSION IN PRIMARY HYPERTENSION

研究原发性高血压左室重量对ＱＴ间期离散度的影响及ＱＴｄ对室性心律失常的预测作用。方法检测１５０例患者的ＱＴ、ＪＴ、ＱＴｃ、ＪＴｃ离散度和超声心动图，其中６８例进行２４小时心电图监测。

Objective:Studying the influence of left ventricular mass (LVM)in primary hypertension toward QT interval dispersion (QTd) and the value of QTd in the prediction of ventricular arrhythmias.Methods:150 patients were determined for their QT,JT,QTc,JTc dispersion and ecchocardiograms,among them 68 patients were observed with 24 hours,EKG determination.Results:In primary hypertension the size of repolarized dispersion was positively related with left ventricular mass;with left ventricular hypertrophy (LVH group) the QTd was greater than that of no left ventricular hypertrophy (control group) (P<0.01);with sustained ventricular tacchycardia (SVT group) the repolarized dispersion was greater than that of no ventricular arrhythmias (P<0.01).Conclusions:The size of repolarized dispersion is mainly related with left ventricular mass.The increase of the rate of cardiac sudden death is probably related with enlargement of QTd.Thus,the change of QTd can be used as a parameter in malignant ventricular arrhythmias with primary hypertension.