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Idiopathic Mitral Annular PVCs with Multiple Breakouts and Preferential Conduction Unmasked by Radiofrequency Catheter Ablation
Author(s) -
YAMADA TAKUMI,
DOPPALAPUDI HARISH,
MCELDERRY H. THOMAS,
KAY G. NEAL
Publication year - 2012
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.2010.02981.x
Subject(s) - medicine , ablation , cardiology , radiofrequency catheter ablation , qrs complex , catheter ablation , radiofrequency ablation , rf ablation
A 39‐year‐old man with idiopathic monomorphic premature ventricular contractions (PVCs), exhibiting a right bundle branch block and inferior axis QRS morphology, underwent electrophysiological testing. After a radiofrequency (RF) application to the anterior mitral annulus (MA) eliminated the spontaneous PVC morphology, a second PVC morphology occurred. Pacing from the first ablation site exhibited an excellent match to the second PVCs with a long stimulus to QRS interval. An RF application delivered near the first lesion eliminated all PVCs. The MA PVCs in this case exhibited a single origin with multiple breakouts and preferential conduction that were unmasked by RF ablation. (PACE 2012; 35:e112–e115)