Q-T间期是QRS波群、ST段及T波时间的总和,代表心室肌除极和复极所需要的时间。长Q-T间期易诱发严重的室性心律失常而猝死,而短Q-T间期近年来亦认为可致心律失常性猝死和临终前的心电图改变,也是一种严重的心电现象〔1〕。本文报告3例因ST段缺失致短Q-T间期综合征。例1男,43岁, The Q-T interval is the sum of the QRS complex, ST segment, and T-wave duration, representing the time required for ventricular depolarization and repolarization. Long Q-T interval is easy to induce serious ventricular arrhythmia and sudden death, and short Q-T interval in recent years also considered can cause arrhythmic sudden death and ECG changes before death, but also a serious ECG phenomenon [1]. This article reports 3 cases of ST segment deletion caused by short Q-T syndrome. Example 1 male, 43 years old,