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Objective:To evaluate the changes in Tp-e interval(an interval from the peak to the end of the T wave), QT interval and Tp-e/QT ratio of the body surface ECG in patients with left ventricular hypertrophy(LVH). Methods:The Tp-e interval and QT interval were measured on body surface ECGs in 42 patients without either hypertension or LVH(control group),41 patients having hypertension but not LVH(non-LVH group),and 38 patients with both hypertension and LVH(LVH group).Results:The mean corrected QT(QTc)interval, and mean corrected Tp-e[T(p-e)c]interval were significantly longer in the LVH group(0.430±0.021s vs. 0.409±0.019s,p<0.01;0.098±0.013s vs.0.088±0.011s,respectively)than those in the control group.The Tp-e/QT ratio was also amplified in LVH group(0.232±0.028 vs.0.218±0.027)(p<0.05).Conclusion:LVH increased the QT interval,Tp-e interval and Tp-e/QT ratio of the body surface ECG.
Objective: To evaluate the changes in Tp-e interval (an interval from the peak to the end of the T wave), QT interval and Tp-e / QT ratio of the body surface ECG in patients with left ventricular hypertrophy (LVH). Methods: The Tp-e interval and QT interval were measured on body surface ECGs in 42 patients without either hypertension or LVH (control group), 41 patients having hypertension but not LVH (non-LVH group), and 38 patients with both hypertension and Results: The mean corrected QT (QTc) interval, and the mean corrected Tp-e [T (pe) c] interval were significantly longer in the LVH group (0.430 ± 0.021s vs. 0.409 ± 0.019s, p <0.01; 0.098 ± 0.013s vs.0.088 ± 0.011s, respectively) than those in the control group.The Tp-e / QT ratio was also amplified in LVH group (0.232 ± 0.028 vs.0.218 ± 0.027) (p < 0.05) .Conlusion: LVH increased the QT interval, Tp-e interval and Tp-e / QT ratio of the body surface ECG.