3.5

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2.3

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  • ISSN 1674-8301
  • CN 32-1810/R
Zhao Zhao, Zuyi Yuan, Yuqiang Ji, Yue Wu, Yinzhi Qi. Left ventricular hypertrophy amplifies the QT, and Tp-e intervals and the Tp-e/ QT ratio of left chest ECG[J]. The Journal of Biomedical Research, 2010, 24(1): 69-72.
Citation: Zhao Zhao, Zuyi Yuan, Yuqiang Ji, Yue Wu, Yinzhi Qi. Left ventricular hypertrophy amplifies the QT, and Tp-e intervals and the Tp-e/ QT ratio of left chest ECG[J]. The Journal of Biomedical Research, 2010, 24(1): 69-72.

Left ventricular hypertrophy amplifies the QT, and Tp-e intervals and the Tp-e/ QT ratio of left chest 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 LVH (LVH group). Results: The mean corrected QT (QTc) interval, and mean corrected Tp-eT(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.
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