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To comparatively assess duration and efficacy ofhigh-resolution and conventional mapping for guiding pulmonary vein (PV) isolation in atrial fibrillation (AF) ablation.
In this single operator, prospective, observational study,62 consecutive patients (aged 60.9±12.6 years; 64.5% males) with AF(48.4% paroxysmal)underwent ablation aimed at PV isolation using high-resolution PentaRay catheter (n=30) or conventional CARTO-Merge (n=32; with prior PV computerized tomography) mapping. Main study outcomes were procedural and fluoroscopy times, and number of gaps requiring re-isolation.
Patient baseline characteristics were similarly distributed by mapping modality and all PVs were successfully isolated. PentaRay catheter vs. CARTO-Merge mapping was associated with significantly (all P<.01)shorter total procedural (107.4+26.1 vs. 129.3+22.6min) and fluoroscopy (6.5+4.7 vs. 15.4+4.7min) times, and lower number of gaps (2.5+1.6 vs. 6.3+3.7).
Relative to conventional CARTO-Mergemapping for guiding PV isolation in AF ablation, high-resolution PentaRay catheter mappingwas more accurate and less time consuming, minimizing fluoroscopy use because of better image integration and visualization.