常规下腔静脉途径消融失败的21例右前侧壁、右后侧壁、右侧壁、前间隔单一房室旁道患者，改经上腔静脉途径后均成功消融，手术时间及放电次数、X线曝露时间明显缩短。作者认为对常规经下腔静脉途径消融失败的右侧房室旁道采用上腔静脉途径可获得成功。%The radiofrequency ablation effect was observed in 21 patientswith single right atrioventricular accessory pathway by superior vena cava approach. Because of many factors, radiofrequency ablation by routine inferior vena cava approach failed. However, all of these accessory pathways were successfully ablated by the superior vena cava approach which could significantly reduce operation and radiofrequency ablation time and exposed time in x-ray, and there were not any complications. The success was probably related to the good contact between the ablation catheter tip and ablation target point. It is suggested that radiofrequency ablation of right atrioventricular accessory pathways by superior vena cava approach is effective and safe when the routine inferior vena cava approach is difficult or unsuccessful.
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