Dispersion of Ventricular Repolarization
نویسندگان
چکیده
منابع مشابه
Dispersion 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 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...
متن کاملDispersion of ventricular repolarization and arrhythmia: study of two consecutive ventricular premature complexes.
The effect of two consecutive ventricular premature stimuli (S1S2) during atrial pacing on dispersion of repolarization and inducibility of ventricular arrhythmias was studied in 16 dogs under control conditions and in four dogs in the presence of an increased dispersion of repolarization during atrial pacing induced by general hypothermia and regional warm blood perfusion via selective cannula...
متن کاملDispersion 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...
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ژورنال
عنوان ژورنال: Circulation
سال: 1998
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.97.25.2491