Decremental intravenous pulse propagation during extrastimulus pacing: relevance for catheter ablation of focal atrial fibrillation.
We report a case study demonstrating delayed circumferential intrapulmonary-venous conduction characteristics during coronary sinus extrastimulus pacing. This phenomenon allowed the unmasking and discrimination of a localized left atrial to PV breakthrough from secondarily activated PV muscle in a common left-sided PV ostium. Thus, this pacing manoeuvre may serve to guide RF delivery in the treatment of focal AF.
Lewalter
T
T
Department of Medicine-Cardiology, University of Bonn, Germany. th.lewalter@uni-bonn.de
Burkhardt
D
D
Chun
S
S
Schimpf
R
R
Bielik
H
H
Schrickell
J
J
Shlevkov
N
N
Yang
A
A
Lüderitz
B
B
D001281:Atrial Fibrillation / Q000601:surgery*; D002304:Cardiac Pacing, Artificial; D017115:Catheter Ablation; D022062:Electrophysiologic Techniques, Cardiac; D006801:Humans; D008297:Male; D008875:Middle Aged; D011667:Pulmonary Veins / Q000601:surgery*