室性心动过速（室速）是急诊常见的一类快速型心律失常。如何根据室速不同的病因及类型，合理选择常用的抗心律失常药，是急诊医师较为棘手的问题。室速的分型目前尚不统一。急诊多根据不同病因，参考心电图改变分5型来选择用药［1］，宣速的临床分型及药物选择见表1．此外，根 Ventricular tachycardia (VT) is a common type of emergency tachyarrhythmias. According to different etiology and types of VT, it is a more difficult issue for emergency physicians to choose the commonly used anti-arrhythmic drugs. The classification of VT is not uniform at present. Emergency and more according to different causes, refer to the ECG changes sub-type 5 to choose medication [1], the clinical manifestations of speed and drug selection in Table 1. In addition, roots