Abstract 11935: A Novel Wire guided Ablation Catheter For Ablation Of Right Superior Pulmonary Vein In Experimental Pigs
A novel wire guided ablation catheter for ablation of right superior pulmonary vein in pigs
Introduction: A novel wire-guided ablation catheter (wire-guided cath) was invented based on principle of compasses for drawing circle.
Hypothesis: This study was to investigate if the guiding wire can increase the efficiency and accuracy of catheter manipulation in right superior pulmonary vein (RSPV).
Methods: Wire-guided cath was composed of a conventional cold saline-irrigated ablation catheter (conventional cath) & a guide-wire. The guide-wire came out from the distal part of catheter. When pushed into the distal of RSPV, the guide-wire can work as a pivot for the catheter to increase stability of catheter manipulation. EnSite Velocity system was used. Contact/mapping & mapping/ ablation were tried by using the catheters in RSPV separately. Seven pigs were used.
Results: In comparison with conventional cath, wire-guided cath took marked less procedure & exposure time to complete the separate contact/mapping at four sites, to do circumferential contact/mapping, & to do radial-linear contact/mapping along RSPV. Furthermore, it can significantly decrease procedure & exposure time by using wire-guided cath to complete the circumferential RSPV ablation & RSPV-antrum radial-linear ablation. During procedures, the ablation catheter had unintentionally fallen into right atrium for 0.7±0.8 times in wire-guided cath group & for 5.1±1.3 times in conventional cath group; it had taken 1.0±0.2 min & 5.0±0.9 min for wire-guided & conventional cath to be pushed back into LA again from atrial septum puncture access. No thrombosis was found on guide-wire & the distal hole of guide-wire lumen, & no scratches, tears & thrombus found in RSPV intima after procedure.
Conclusions: The study shows wire-guided cath had significant advantages in manipulation of moving, positioning & contacting, which may help to improve ablation skills of atrial fibrillation for younger EP doctors.
Author Disclosures: X. Zhao: None. H. Gong: None. J. Hu: None.
- © 2016 by American Heart Association, Inc.