The recognition that paroxysmal atrial fibrillation (AF) is predominantly triggered by ectopic beats arising from the vicinity of pulmonary veins (PVs) has spurred the establishment of percutaneous procedures specifically designed to electrically sequestrate the arrhythmogenic PV from the vulnerable left atrium (LA) substrate.
1Recently, the procedure has evolved with the development of purpose-built pulmonary vein isolation (PVI) tools, such as the cryoballoon catheter. This article discusses the anatomic and electrophysiologic bases for the interpretation of pulmonary vein potentials (PVPs) using a small-caliber circular mapping catheter (CMC) and provides an expanded discussion on the pacing maneuvers relevant to cryoballoon-based PVI procedures.
- Haissaguerre M.
- Jais P.
- Shah D.C.
- et al.
Spontaneous initiation of atrial fibrillation by ectopic beats originating in the pulmonary veins.
N Engl J Med. 1998; 339: 659-666
Abbreviations:AF (atrial fibrillation), CMC (circular mapping catheter), LA (left atrium), LAA (left atrial appendage), LIPV (left inferior pulmonary vein), LSPV (left superior pulmonary vein), PV (pulmonary vein), PVI (pulmonary vein isolation), PVP (pulmonary vein potential), RA (right atrium), RF (radiofrequency), RIPV (right inferior pulmonary vein), RSPV (right superior pulmonary vein), SVC (superior vena cava)
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- Spontaneous initiation of atrial fibrillation by ectopic beats originating in the pulmonary veins.N Engl J Med. 1998; 339: 659-666
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- The COR trial: a randomized study with continuous rhythm monitoring to compare the efficacy of cryoenergy and radiofrequency for pulmonary vein isolation.Heart Rhythm. 2014; 11: 8-14
Published online: February 24, 2015
© 2015 Heart Rhythm Society. Published by Elsevier Inc. All rights reserved.