Abstract 12062: Incidence of Silent Cerebral Lesions After Pulmonary Vein Isolation Using a Remote Robotic Navigation Sytem as Compared to Manual Ablation
Background The incidence of silent cerebral lesions (SCL) after atrial fibrillation ablation is highly variable depending on technologies used. The incidence of periprocedural SCL following robotically assisted PVI has not yet been determined. The aim of this prospective study was to evaluate the incidence of periprocedural SCL in patients (pts) undergoing robotically assisted PVI (RA-PVI) as compared to manual PVI.
Methods Circumferential PVI using irrigated radiofrequency current was performed on 70 patients (41 pts with paroxysmal AF, 58,6%). Fifty patients underwent RA- PVI, and 20 pts underwent a manual approach. Cerebral MRI was performed one day before and within two days after the ablation procedure.
Results SCLs were found in 12/70 (17,1%) pts in this study; the incidence of SCLs was similar in pts undergoing RA-PVI as compared to manually ablated pts. (n=9, 18% vs. n=3, 15%, p-value = 1,0). In one patient undergoing manual-PVI (1,4%) a SCL with asymptomatic cerebral bleeding was detected. Transient ischemic attack occurred in one (1,4%) patient 2 days after manual-PVI. No risk factors for SCL such as ACT levels during ablation could be identified in multivariate analysis.
Conclusions The incidence of SCL using the RNS was 18% in this trial. Incidence and size of SCL appears to be similar following RA-PVI as compared to manual-PVI.
- © 2011 by American Heart Association, Inc.