Prevalence, risk, and benefits of radiofrequency catheter ablation at the aortic cusp for the treatment of mid to anteroseptal supra-ventricular tachyarrhythmias

Junbeom Park, Jin Wi, Boyoung Joung, Moon Hyoung Lee, Young Hoon Kim, Chun Hwang, Hui Nam Pak

Research output: Contribution to journalArticlepeer-review

28 Scopus citations


Background: Some outflow tract ventricular tachycardias (VTs) are known to be successfully ablated from the aortic cusp (AC). However, radiofrequency catheter ablation (RFCA) at the AC for the treatment of supraventricular tachyarrhythmia (SVT) has limited experience. Methods: We performed RFCA at the AC in 19 patients (male 64.7%, 46.9 ± 21.9 years old) with mid- to anteroseptal SVTs (12 atrial tachycardias [AT], 7 atrioventricular reciprocating tachycardia [AVRT]), and analyzed the prevalence, electrophysiologic findings, clinical outcome, and compilation risk. Results: 1. Among 113 patients with AT, 13 patients had mid- to anteroseptal AT and 12 patients (8.8%, 53.4 ± 19.8 years old, 58.3% female) underwent successful ablation from the non-coronary cusp (NCC; n = 10), right CC (RCC; n = 1) or left CC (LCC; n = 1) without complication (3.1 ± 2.3 times RF delivery, 6.15 ± 3.08 s for termination). During 19.7 ± 9.8 months of follow-up, AT recurred in a patient with multiple foci. 2. Among 580 patients with AVRT, 27 patients had a mid- to anteroseptal bypass tract (4.7%), and 7 of them (1.1%, 2 pre-excitation syndrome, 5 concealed bypass tract) were successfully ablated at the NCC (n = 2) or RCC (n = 5) (7.0 ± 7.1 times RF delivery, 9.1 ± 4.4 s for termination). Among 5 patients with AVRT successfully ablated at the RCC, one patient developed complete heart block 48 h after procedure, and 2 patients recurred AVRT or delta-wave in ECG during 13.9 ± 11.7 month follow-up. Conclusion: Catheter ablation within the AC is an effective procedure to eliminate mid- to anteroseptal SVTs. However, RFCA on RCC requires a caution for heart block in our limited experience.

Original languageEnglish
Pages (from-to)981-986
Number of pages6
JournalInternational Journal of Cardiology
Issue number3
StatePublished - 10 Aug 2013

Bibliographical note

Funding Information:
This work was supported by a grant ( A085136 ) from the Korea Health 21 R&D Project of the Ministry of Health and Welfare and a grant ( 2010–0010537 ) from the Basic Science Research Program run by the National Research Foundation of Korea which is funded by the Ministry of Education, Science and Technology of the Republic of Korea .


  • Aortic cusp
  • Atrial tachycardia
  • Catheter ablation
  • Supraventricular tachycardia


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