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本文对21例阵发性室上性心动过速(PSVT)患者用异搏定终止 PSVT 过程中进行了用药前后临床电生理的观察.结果表明:1.21例 PSVT 用异搏定后全部终止发作,有效率达100%;2.异搏定对房室结传导径路前向传导不应期和传导速度均有明显的抑制作用是其终止室上速的基础;3.静注异搏定后,可引起血压下降,但对心动过速患者,用异搏定终止心动过速后,血压可较心动过速时反而有轻度回升.示心动过速时血压偏低者不属异搏定禁忌症.
In this paper, 21 cases of patients with paroxysmal supraventricular tachycardia (PSVT) were treated with verapamil termination of PSVT clinical electrophysiological observation before and after treatment.The results showed that: 1.21 cases of PSVT with verapamil all the termination of the attack, Effective rate of 100%; 2. Verapamil on atrioventricular node conduction pathway before conduction refractory period and conduction velocity were significantly inhibited its role in the termination of supraventricular tachycardia; 3 intravenous verapamil, Can cause blood pressure, but tachycardia patients with verapamil to terminate tachycardia, blood pressure may be more than tachycardia but mild rebound.Short heart rate tachycardia is not contraindication is not taboo disease.