Cryoablation of junctional ectopy

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Control/Tracking Number: 10-A-4351-HRS Activity: Abstract Submission Current Date/Time: 12/13/2009 3:38:58 AM Cryoablation of junctional ectopy

Author Block: Nuria Rivas, MD, Angel Moya, MD, PhD, Oscar Alcalde, MD, Jordi Perez-Rodon, Jordi Sans, MD, Axel Sarrias, MD and David García-Dorado, MD, PhD. Cardiology Deparment. Area del Cor. Hospital Universitario Vall d´Hebron, Barcelona, Spain Abstract: Introduction: 62 year old woman with frequent and symptomatic junctional ectopy. Methods: N/A Results: A 3D electroanatomic map of the right atria was performed with the EnSite NavX system (Endocardial Solutions, St Paul, Minn) (fig 2). A Halo catheter (Cordis Webster, Diamond Bar, Calif) was positioned along the conduction system (CSys). A His deflection preceded ventricular and atrial depolarization in the ectopic beats (EB) (fig 1). The earliest atrial activation during the EB was observed in the AV node area (fig 2). Dual AV nodal physiology was present and a single nodal echo beat could be induced. Radiofrequency was initially delivered in the slow pathway region (red dots) during which accelerated junctional rhythm was observed without any effect in the EB. Cryoablation (Cryo) in the CSys was then used (orange dots). An application of Cryo in the point of the earliest His (blue dot) made disappear the EB. An incomplete right bundle block (normal HV) was provoked. Conclusions: Application of Cryo in the CSys can be safe and effective in the

treatment of junctional EB.

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: Author Disclosure Information: N. Rivas, None; A. Moya, None; O. Alcalde, None; J. Perez-Rodon, None; J. Sans, None; A. Sarrias, None; D. García-Dorado, None. Category (Complete): 64 Teaching Case Reports Keywords (Complete): +Supraventricular tachycardia ; +Ablation - catheter Additional Abstract Information (Complete): Presentation Preference: Oral or Poster I am interested in submitting an abstract for one of the Late-Breaking Trials sessions. : No At the conclusion of this presentation, attendees will be able to: (Maximum character limit 250) *Learning Objective: : To recognize junctional ectopic beats and learn how to use cryoablation in this setting.

Abstract Awards (Complete): None : True

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