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Proarrhythmic ECG Deterioration Caused by Myocardial Ischemia of the Conus Branch Artery in Patients with a Brugada ECG Pattern
Author(s) -
OGANO MICHIO,
IWASAKI YUKI,
MORITA NORISHIGE,
TANABE JUN,
SHIIBA KUNITO,
MIYAUCHI YASUSHI,
KOBAYASHI YOSHINORI,
TANAKA KEIJI,
KATOH TAKAO,
MIZUNO KYOICHI
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.1540-8159.2010.02742.x
Subject(s) - medicine , brugada syndrome , cardiology , ventricular fibrillation , ventricular tachycardia , asymptomatic , electrocardiography , st segment , ventricular outflow tract , st elevation , sudden cardiac death , myocardial infarction
The Brugada‐type electrocardiogram (ECG) is characterized by ST‐segment elevation in the right precordial ECG leads and has been reported to have the potential of sudden death. Right ventricular outflow tract supplied from the conus branch of the coronary artery (CB) is considered as the anatomopathologic substrate of Brugada syndrome. We experienced two asymptomatic patients with a saddleback Brugada‐type ECG who exhibited a dynamic ECG conversion to a coved type following a ventricular fibrillation/ventricular tachycardia (VT/VF) episode when myocardial ischemia occurred exclusively at the CB. Some types of Brugada syndrome might be caused VT/VF by selective myocardial ischemia at the CB. (PACE 2011; 34:e26–e29)