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Evidence for an Intramural Origin of Idiopathic Premature Ventricular Contractions Successfully Ablated within the Great Cardiac Vein
Author(s) -
YAMADA TAKUMI,
McELDERRY H. THOMAS,
DOPPALAPUDI HARISH,
KAY G. NEAL
Publication year - 2011
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.1540-8159.2010.02828.x
Subject(s) - medicine , cardiology , qrs complex , great cardiac vein , electrophysiology , artery
A 37‐year‐old woman with idiopathic premature ventricular contractions (PVCs), exhibiting a right bundle branch block and inferior axis QRS morphology, underwent electrophysiological testing. The earliest ventricular activation with an isolated prepotential was observed within the great cardiac vein during the PVCs. Pacing from this site with an output of 10 mA produced an excellent pace map, whereas that with an output of 2 mA produced a wider QRS with notches in the early phase. A radiofrequency application delivered at this site eliminated the PVCs. These findings suggested that the PVC origin might have been intramural rather than epicardial. (PACE 2011; 34:e112–e114)