Abstract：Myocardial action potential results from the regular opening and closing of ion channels on the cell membrane. Different from depolarization, the repolarization of ventricular muscle goes through a long period, influenced by many factors and thus performs poor stability. Ventricular repolarization is an important stage in electrical activities of the heart. Even micro interference in the process may trigger arrhythmia. Electrocardiogram is the most commonly used and convenient method of detecting the inconsistency of ventricular repolarization. Several electrocardiographic indicators such as corrected QT interval, QTd, QT/RR, Tp-Te, Tp-Te/QT, QRS-T angle and VG are frequently used to evaluate the stability of ventricular repolarization. These indicators are used extensively in the risk evaluation of various diseases clinically. This paper reviews on the research progress of the above indicators.
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2017, Vol. 26 
