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REVIEW ARTICLE
Year : 2017  |  Volume : 2  |  Issue : 1  |  Page : 13-21

Latest technologies and techniques to improve pulmonary vein isolation


Department of Cardiology, Princess Margaret Hospital, Lai Chi Kok, Kowloon, Hong Kong, China

Correspondence Address:
Ho-Chuen Yuen
Princess Margaret Hospital, 2.10 Princess Margaret Hospital Road, Lai Chi Kok, Kowloon, Hong Kong
China
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/2352-4197.208460

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Pulmonary vein isolation (PVI) is the established cornerstone in catheter ablation for atrial fibrillation (AF). The traditional point-to-point ablation by focal radiofrequency (RF) catheter to achieve PVI was technically challenging, and the outcome remained suboptimal despite advancement in three-dimensional electroanatomical mapping systems and steerable sheaths. Different catheter designs including contact force, balloon-based catheters with other energy sources (cryothermal and laser energies), and circular RF catheters have been developed to make the ablation procedure more user-friendly and PVI more durable. Adjunctive techniques including detection of dormant conduction by adenosine triphosphate injection and pace-capture-guided ablation have also been studied to improve the durability of PVI and thus reduce the AF recurrence rate.


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