室性心动过速(简称室速)是一种危险性的心律失常,处理不及时或措施不得力有时很快发展为心室颤动。其治疗的方法有:抗心律失常药物的应用,电击复律、电起搏和外科手术治疗,其中以药物治疗最简便而有效。较老的药物本文不加赘述。本文仅就目前最近使用的介绍如下。一、慢心律(Mexilefine)为利多卡因的衍生物。电生理作用:增加细胞膜对K~+的通透性,抑制Na~+通道,促进4相K~+外流,从而降低4相坡度,降低自律性,故适用于早搏型,并行型多形型和双向型室速。紧急情况下可用慢 Ventricular tachycardia (referred to as VT) is a dangerous arrhythmia, treatment is not timely or ineffective and sometimes rapidly developed ventricular fibrillation. The treatment methods are: antiarrhythmic drugs, cardioversion, electrical pacing and surgical treatment, of which the most simple and effective drug treatment. Older drugs will not be repeated here. This article only on the current use of the introduction below. First, the slow heartbeat (Mexilefine) is a derivative of lidocaine. Electrophysiological effects: increase cell membrane permeability to K ~ +, inhibit Na ~ + channels, promote 4 phase K ~ + outflow, thereby reducing the 4-phase slope, reduce self-discipline, it is suitable for premature beat, parallel type And two-way VT. Available in emergency situations