Pulmonary vein isolation using a novel decapolar over-the-wire mapping and ablation catheter.
Recently, a novel radiofrequency (RF) ablation system has been developed to perform pulmonary vein (PV) isolation. The system consists of a decapolar, steerable, over-the-wire mapping and ablation catheter combined with a multichannel RF generator that delivers energy in a temperature-controlled, power-limited fashion in both uni- and bi-polar modes. Using this technique, long continuous ablation lesions can be created within the left atrial antrum around the PV ostium. Electrical disconnection of PVs can be achieved in 93% of targeted PVs. Medium-term success is reported as 79.5% of patients with paroxysmal atrial fibrillation (no atrial fibrillation episodes detected during intensive holter monitoring). Ablation procedures using the novel technique are reported to be short (mean procedure duration: 84-201 min), including RF application duration of up to 40 min. Procedure-related complications are rare (1.8%) but the included total patient numbers are small and further studies on larger patient populations are needed.
Deneke
Thomas
T
Academic Heart Center Cologne, Urbacher Weg 19, 51149 Cologne-Porz, Germany and Ruhr-University Bochum, Germany. thomas.deneke@rub.de
de Groot
Joris R
JR
Horlitz
Marc
M
Mügge
Andreas
A
Grewe
Peter H
PH
Bünz
Katrin
K
Bastian
Annely
A
Haberkorn-Butendeich
Ron
R
Shin
Dong-In
DI
D001281:Atrial Fibrillation / Q000503:physiopathology / Q000601:surgery*; D018780:Body Surface Potential Mapping; D017115:Catheter Ablation / Q000295:instrumentation / Q000379:methods*; D004567:Electrodes, Implanted; D006329:Heart Conduction System / Q000601:surgery; D006801:Humans; D011667:Pulmonary Veins / Q000601:surgery*; D011846:Radio Waves; D014159:Transducers; D016896:Treatment Outcome