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本文旨在研究胺碘酮静脉注射的效应及其在阵发性室上性心动过速患者中的作用机理。方法:9例反复发作阵发性室上性心动过速的男性患者,年龄50～68岁。从肘前静脉或大隐静脉插入四极电极导管,置于右房上部、冠状窦、三尖瓣和右室尖,用作记录和刺激。当程序刺激引起房室结文氏传导阻滞时,定时关闭刺激器,以观察其自发性衍变,并再作心房和心室程序性期前刺激。在上述对照性电生理检测之后,于15～20分钟内,静脉输注胺碘酮5毫克/公斤体重。10分钟后,再作电生理
This article aims to study the effect of intravenous amiodarone and its mechanism in patients with paroxysmal supraventricular tachycardia. Methods: Nine male patients with recurrent paroxysmal supraventricular tachycardia were aged 50 to 68 years old. A quadrupole catheter was inserted from the antecubital vein or saphenous vein and placed in the superior right atrium, coronary sinus, tricuspid valve, and right ventricular apex for recording and stimulation. When the program stimulates the atrioventricular block, the stimulator is switched off periodically to observe its spontaneous evolution and to re-program the atrial and ventricular pre-procedural stimuli. Amiodarone 5 mg / kg body weight was intravenously administered 15 to 20 minutes after the above control electrophysiological test. After 10 minutes, then for electrophysiology