• Shaojie Peng, Yunxian Yu, Ke Hao, Houxun Xing, Dong Li, Changzhong Chen, Aiqun Huang, Xiumei Hong, Yan Feng, Yan Zhang, Jianping Li, Binyan Wang, Di Wu, Xiaobin Wang, and Xiping Xu.
• Institute of Biomedicine, Anhui Medical University, Hefei 230032, China.
• J Electrocardiol. 2006 Apr 1; 39 (2): 206-10.

IntroductionMany studies demonstrated that a prolonged heart rate-corrected QT interval (QTc) increases the risk of malignant ventricular arrhythmias and sudden death.MethodsWe measured the electrocardiogram and blood pressure of 1480 hypertensive patients and assessed the relationship between the length of QTc and blood pressure.ResultsThe mean QTc is longer in female than in male participants. There was a positive association between QTc and blood pressure in both men and women. The estimated increase in systolic and diastolic blood pressure for each 100-millisecond increase in QTc was 6.4 and 5.0 mm Hg in men and 3.7 and 2.5 mm Hg in women, respectively.ConclusionOur study demonstrated a significant positive relationship between the QTc interval and baseline blood pressure in a Chinese hypertensive population.

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