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Comparison of the point-by-point versus catheter dragging technique for curative radiofrequency ablation of atrial fibrillation.
MedLine Citation:
PMID:  21029137     Owner:  NLM     Status:  In-Process    
BACKGROUND: The relationship between the applied techniques and clinical outcomes after radiofrequency (RF) ablation of atrial fibrillation (AF) remains unclear. We compared the results of ablation by RF delivered via a point-by-point versus catheter dragging technique for the treatment of AF.
METHODS: This study included 66 patients with drug-refractory AF who underwent circumferential pulmonary vein (PV) ablation. A point-by-point technique was used in 35 (53%) patients (Group I), and catheter dragging technique in the remaining 31 (47%) patients (Group II). If AF persisted or remained inducible after the PV isolation, additional ablation of complex fractionated atrial electrograms and linear ablation were performed.
RESULTS: Significantly, fewer RF applications were delivered in Group II than in Group I. The total RF energy duration delivered was comparable between the two groups (P = 0.55). However, the total energy of RF deliveries was significantly greater in Group II than in Group I (P = 0.02). Despite a longer fluoroscopic exposure time (P = 0.01), the total procedural duration was significantly shorter in Group II than in Group I (P = 0.005). Within 3 months after a single ablation procedure, 24 patients (69%) in Group I versus 13 patients (42%) in Group II had ≥1 recurrence(s) of atrial tachyarrhythmias (P = 0.03). A multivariate analysis showed that a point-by-point ablation was the only independent predictor of early atrial tachyarrhythmia recurrences.
CONCLUSIONS: The catheter dragging technique for ablation of AF was associated with a lower early recurrence rate of atrial tachyarrhythmias than the point-by-point technique.
Miki Yokokawa; Anil K Bhandari; Hiroshi Tada; Atsushi Suzuki; Mitsuharu Kawamura; Ivan Ho; David S Cannom
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Publication Detail:
Type:  Journal Article     Date:  2010-10-28
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  34     ISSN:  1540-8159     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  2011 Jan 
Date Detail:
Created Date:  2011-01-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  15-22     Citation Subset:  IM    
Copyright Information:
©2010, The Authors. Journal compilation ©2010 Wiley Periodicals, Inc.
Division of Cardiology, Good Samaritan Hospital, Los Angeles, California 90017, USA.
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