摘要(Abstract)：

<正> Fifty six patients with intractable supraventricular tachycardiainduced by 57 accessory pathways were treated by radiofrequencycurrent catheter ablatio(RFCA)from October,1993 to January,1998.34 sales and 22 females,aged from 16-63 years.They had no organiccardia disease and treated with antiarrhythemia agents in all casesbut failed before RFCA therapy,the electrophysiological examinaionwas done for dsterming the location of acceesory pathway andevaluating the results before and after the treatment,34 dominantpathways and 23 latent pathways,and 42 on the left side and 15 onthe right side were found in examination.We used 12±11 time ofmean pulses,29±2.6 watts of radiofrequency energy,8105±6059J ofcumulative electro-energy and 1.1±0.5 hours in each patient,allpatient had no arrhythemia even antiarrhythemia agents was withdrewafter the therapy and during 2-62 months follow-up.They had no arerecurrence.Tne results suggested as follows:1.The accurate location of the accessory pathway was a importantfactor in the successful ablation therapy and the standardlocation of ablation target was the shortest A-V or V-A interval;the accessory pathway potential wasn't a marker in the location inour study.2.The procedure time and consumption of ablation energy on theright side was wore and higher than that on the left(1h and 1.3h.5418J and 12864J respectlvely)which was due to the cathetercouldn't touch wih endocardia closely so result to the accessorypathway wasn't blocked properly.

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