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我院自1990年开展食道心房调搏诊断室上速的检查,从中诊断出房室结折返性心动过速24例,现将其总结如下。1 临床资料方法:经食道心房调搏,主要采用SiS分级递增刺激法,即从略快于自身心率开始,发放S_1S_1刺激,夺获心房后逐次递增频率,每次刺激持续10～20秒,频率每次增加5～10次,直到出现房室传导阻滞或心房不应期。原理:正常房室结传导者,房室传导时间(SR)随S_1S_1周期缩短而延长,呈连续的
Our hospital since 1990 to carry out esophageal atrial pacing diagnosis of supraventricular tachycardia, diagnosis of atrioventricular nodal reentrant tachycardia in 24 cases, now summarized as follows. 1 clinical data methods: transesophageal atrial pacing, mainly using SiS grading ascending stimulation method, that is, starting slightly faster than their own heart rate, S 1 S 1 S 1 S 1 S 1 Stimulation issued after seizure of the heart, increasing the frequency of each successive stimulation for 10 to 20 seconds, the frequency Each increase of 5 to 10 times until the emergence of atrioventricular block or atrial refractory period. Principle: Normal atrioventricular node conduction, atrioventricular conduction time (SR) with S_1S_1 cycle is shortened to extend, was continuous