老年高血压病左室肥厚与QT离散度及心室晚电位的关系

RELATIONSHIP BETWEEN LEFT VENTRICULAR HYPERTROPHY AND QT DISPERSION,VENTRICULAR LATE POTENTIAL IN OLD AGED HYPERTENSION

目的探讨老年高血压病左室肥厚 (leftventricularhypertrophy ,LVH)与QT离散度 (QTdispersion ,QTd)、心室晚电位 (ventricularlatepotential,VLP)及室性心率失常 (ventriculararrhythmias,VA)的关系。 方法选择 90例老年高血压病进行超声心动图、动态心电图、心电图及VLP检查。结果高血压伴LVH时QTd为 (5 8.0 4± 17.13)ms ,VLP阳性率为 30 .30 % ,明显高于无LVH者 (QTd为 47.0 2± 16 .0 9ms,VLP阳性 7.0 0 % ,P <0 .0 1)。同时发现LVH时QTd大于 6 0ms,VLP阳性与VA、密切相关。结论老年高血压病伴LVH时如检测到异常长QTd。

ObjectiveTo discuss the relationship between left ventricular hypertrophy(LCH) and QT dispersion(QTd),ventricular late potential (VLP),ventricular arrhythmias (VA) in old aged hypertension.MethodsBy echocardiogram,dynamic electrocardiogram,electrocardiogram and VLP examination,ninty cases of old aged hypertension were monitored.Rsults When hypertension complicated with LVH,QTd was ( 58.04 ± 17.13 ) ms,VLP positive rate was 30.30 %,significantly higher than that without LVH (QTd 47.02 ± 16.09 ms,VLP 7.00 %,P< 0.01 ).When LVH existed and QTd more than 60 ms,VLP positivity correlated closely with VA.Conclusion Abnormal long QTd and VLP positivity in old aged hypertension has some value in evaluation of malignant arrhythmia.