Research Progress on the Application of Tp-e/QT Ratio in Clinical Practice

Tp-e interval refers to the time interval between the T wave apex and T wave endpoint of electro-cardiogram, which is the final component of QT interval and can represent the dispersion of repolarization between a small part of ventricular muscles after repolarization of most ventricular muscles. Tp-e/QT ratio refers to the ratio of Tp-e interval to QT interval. Tp-e is a more sensitive predictor of arrhythmia than TP-E because it is independent of heart rate variability and QT interindividual fluctuations, and is an important predictor of sudden cardiac death. This paper reviews its research and hopes to provide predictive value for the occurrence of malignant arrhythmia in clinic.