Dispersion of Ventricular Depolarization-Repolarization
نویسندگان
چکیده
منابع مشابه
Dispersion of ventricular depolarization-repolarization: a noninvasive marker for risk stratification in arrhythmogenic right ventricular cardiomyopathy.
BACKGROUND We retrospectively investigated the value of clinical and ECG findings as well as QT-QRS dispersion in predicting the risk of sudden death in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC). METHODS AND RESULTS Duration and interlead variability of the QT interval and QRS complex were measured manually from standard ECGs in 20 sudden death victims with ARVC dia...
متن کاملDispersion of ventricular repolarization: reality? Illusion? Significance?
The QT interval is considered to be a surrogate of cellular action potential duration. However, it yields a limited view of the complex electrogenesis of the ventricular repolarization (VR). Evidence of T-wave end inequality among surface ECG traces back to Wilson et al, and it was recently revived by the concept of dispersion. Because of its apparent simplicity, QT dispersion became fashionabl...
متن کاملDispersion of repolarization during induction and termination of ventricular fibrillation.
disease in Southern Europe; however, differences in genotpye frequencies most likely cannot explain differences in associations between genotype and risk of ischemic heart disease in different parts of the world. Other possible explanations for such differences exist. First, the apolipoprotein E polymorphism may act as a susceptibility mutation for ischemic heart disease; such mutations need ce...
متن کاملElectrocardiographic identification of abnormal ventricular depolarization and repolarization in patients with idiopathic ventricular fibrillation.
OBJECTIVES We sought to gain more insight into the arrhythmogenic etiology of idiopathic ventricular fibrillation (VF) by assessing ventricular depolarization and repolarization properties by means of various electrocardiographic (ECG) techniques. BACKGROUND Idiopathic VF occurs in the absence of demonstrable structural heart disease. Abnormalities in ventricular depolarization or repolarizat...
متن کاملVentricular hypertrophy amplifies transmural repolarization dispersion and induces early afterdepolarization.
The effects of left ventricular hypertrophy (LVH) on the generation of phase 2 early afterdepolarization (EAD) and transmural dispersion of repolarization (TDR) were assessed using arterially perfused rabbit ventricular wedge preparations. Transmembrane action potentials from epicardium, subendocardium, and endocardium were simultaneously recorded together with a transmural ECG. Transmural acti...
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ژورنال
عنوان ژورنال: Circulation
سال: 2001
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.103.25.3075