Premium
Idiopathic Premature Ventricular Contractions Exhibiting Preferential Conduction within the Aortic Root
Author(s) -
YAMADA TAKUMI,
YOSHIDA YUKIHIKO,
INDEN YASUYA,
MUROHARA TOYOAKI,
KAY G. NEAL
Publication year - 2010
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.1540-8159.2009.02571.x
Subject(s) - medicine , cardiology , limiting , cusp (singularity) , ablation , aortic root , radiofrequency ablation , electrophysiology , electrophysiology study , catheter ablation , aorta , mechanical engineering , geometry , mathematics , engineering
A 65‐year‐old man with frequent premature ventricular contractions (PVCs) underwent electrophysiological testing. Although an excellent pace map was obtained from the right coronary cusp (RCC), radiofrequency ablation at that site interrupted the PVCs transiently. Successful ablation was achieved in the left coronary cusp with earlier local ventricular activation during the PVCs than that in the RCC. These findings suggest that preferential conduction within the aortic root may exist and cause ventricular arrhythmias (VAs) arising from this region to exhibit variable electrocardiographic features, thereby limiting the reliability of electrocardiographic algorithms and pace mapping to predict the site of the VA origin. (PACE 2010; e10–e13)