The important role of pulmonary vein carina ablation as an adjunct to circumferential pulmonary vein isolation

Ameya R. Udyavar, Shih Lin Chang, Ching Tai Tai, Yenn Jiang Lin, Li Wei Lo, Ta Chuan Tuan, Hsuan Ming Tsao, Ming Hsiung Hsieh, Yu Feng Hu, Shuo Ju Chiang, Yi Jen Chen, Wanwarang Wongcharoen, Satoshi Higa, Kwo Chang Ueng, Shih Ann Chen

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Abstract

Pulmonary Vein Carina Ablation. Objectives and Background: The success rate of achieving electrical isolation by circumferential pulmonary vein ablation (CPVA) varies from 32% to 88%. We carried out ablation at the pulmonary vein carina to evaluate the elimination rates of the pulmonary vein potentials (PVPs) after one round of CPVA had failed to eliminate all the PVPs in the patients with atrial fibrillation (AF). Methods: Ninety-seven patients (75 males; mean age: 50 ± 12 years; 15 with persistent AF and 82 with paroxysmal AF) who underwent catheter ablation were analyzed. All patients underwent one round of CPVA with PVP elimination as the endpoint. The electrophysiology tracings were then analyzed to look for the presence of any gaps that were subsequently targeted by radiofrequency ablation. The patients in whom the PVPs still persisted underwent ablation at the pulmonary vein carina and the success rate of the PVP elimination was studied. The patients were followed up for a mean duration of 12.9 ± 8.2 months. Results: One hundred ninety-four ipsilateral pulmonary veins in 97 patients were subjected to CPVA with successful elimination of the PVPs in 110 ipsilateral pulmonary veins (success rate of 56.7%). A carina ablation was carried out in the remaining 84 ipsilateral pulmonary vein pairs harboring PVPs. Elimination of the PVPs was achieved in all the remaining ipsilateral pulmonary veins after the carina ablation. Conclusion: Considering the limited efficacy of CPVA in eliminating the PVPs, pulmonary vein carina ablation is advisable to substantially increase the PVP elimination rate.

Original languageEnglish
Pages (from-to)593-598
Number of pages6
JournalJournal of Cardiovascular Electrophysiology
Volume19
Issue number6
DOIs
Publication statusPublished - Jun 2008
Externally publishedYes

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Keywords

  • Atrial fibrillation
  • Catheter ablation
  • Electroanatomic mapping
  • Pulmonary vein potentials

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology

Cite this

Udyavar, A. R., Chang, S. L., Tai, C. T., Lin, Y. J., Lo, L. W., Tuan, T. C., Tsao, H. M., Hsieh, M. H., Hu, Y. F., Chiang, S. J., Chen, Y. J., Wongcharoen, W., Higa, S., Ueng, K. C., & Chen, S. A. (2008). The important role of pulmonary vein carina ablation as an adjunct to circumferential pulmonary vein isolation. Journal of Cardiovascular Electrophysiology, 19(6), 593-598. https://doi.org/10.1111/j.1540-8167.2008.01182.x