QT离散度预测老年冠心病患者室性心律失常的发生

Predicted ventricular arrhythmia of the old patient with coronary heart disease by QT disperision

目的 :探讨 QT离散度 (QTd)作为预测室性心律失常发生指标的意义。方法 :对 70例冠心病患者 ,包括 34例室性心律失常患者及 30例健康者的 QTd进行比较。结果 :冠心病组的 QTd值 (61 .34± 2 0 .1 7) ms明显大于正常组 ,P<0 .0 0 1。其中室性心律失常患者的 QTd值 (76.94±2 2 .1 9) ms明显高于冠心病组 ,P<0 .0 0 5。当 QTd≥ 60 ms时 ,心律失常组的阳性率明显大于冠心病组。结论

Objective:To predict the ventricular arrhythmia by QT disperision (QTd)Methods:To compare the results of QTd of 70 patients with coronary heart disease,including 34 patients with ventricular arrhythmiaand 30 normal subjectsResults:There was a larger QTd in corenary heart disease group than in the normal(6134±2017)ms Vs (3888±1146)ms P<0001There was the largest QTd in the patients with ventricular arrhythmia when QTd was more than 60ms,the number of the patients with ventricular arrhythmia was more than that with coronary heary diseaseConclusion:QTd is one of the criterion to predict ventricular arrhythmia