Pseudo cryomapping for ablation of atrioventricular nodal reentry tachycardia: A single center North American experience.
Autor: | Moondra VK; Heart and Vascular Institute of Florida, Clearwater, FL, United States., Greenberg ML; Section of Cardiology, Department of Medicine, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine, Dartmouth, United States., Gerling BR; Section of Cardiology, Department of Medicine, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine, Dartmouth, United States., Holzberger PT; Section of Cardiology, Department of Medicine, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine, Dartmouth, United States., Weindling SN; Overland Park Regional Medical Center, Overland Park, KS, United States., Sangha RS; Section of Cardiology, Department of Medicine, Dartmouth-Hitchcock Medical Center, Geisel School of Medicine, Dartmouth, United States. Electronic address: rajbir.s.sangha@hitchcock.org. |
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Jazyk: | angličtina |
Zdroj: | Indian pacing and electrophysiology journal [Indian Pacing Electrophysiol J] 2017 Jul - Aug; Vol. 17 (4), pp. 95-99. Date of Electronic Publication: 2017 Jan 06. |
DOI: | 10.1016/j.ipej.2016.12.007 |
Abstrakt: | Background: Most literature for cryoablation of atrioventricular nodal reentry tachycardia (AVNRT) is based on -30 degree celsius cryomapping with 4 & 6 mm distal electrode catheters. The cryomapping mode is not available on the 6 mm cryocatheter in the United States. We describe a technique for 'pseudo' mapping at -80° using a 6 mm cryocatheter and report on short and long term outcomes. Methods: A retrospective analysis of all index cases (n = 253) of cryoablation of AVNRT at a single North American institution during the period of 2003-2010 was performed. The majority of cases utilized a 6 mm distal electrode tip catheter. Long term follow up (2.4 ± 1.8 years) was performed via review of the medical record and by questionnaire or telephone if necessary. Results: Acute ablation success was achieved in 93% of cases, with transient conduction defects noted in 39% of cases, and long term conduction defects in 1.6% of cases (4 patients with PR prolongation, 2 of which were permanent). General anesthesia, male gender and presence of structural heart disease were more common in the acute failure cohort. The recurrence rate for AVNRT was 8%. These patients tended to be younger and had more transient A-V conduction defects during the index procedure than those without a recurrence. Conclusions: In conclusion, anatomic cryoablation of AVNRT utilizing a 6 mm electrode catheter with mapping performed at -80° Celsius is a safe procedure with good long term efficacy. Transient A-V block during the index procedure increases the risk of late recurrence. (Copyright © 2017 Indian Heart Rhythm Society. Production and hosting by Elsevier B.V. All rights reserved.) |
Databáze: | MEDLINE |
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