Ventricular repolarization measures for arrhythmic risk stratification
نویسندگان
چکیده
منابع مشابه
Novel conduction-repolarization indices for the stratification of arrhythmic risk
Sudden cardiac death (SCD) affects approximately 800,000 individuals per annum globally. It is most frequently due to cardiac tachy-arrhythmias, which include mono-morphic or polymorphic ventricular tachycardia (VT), torsade de pointes and ventricular fibrillation (VF). Risk stratification for SCD remains a challenging problem in clinical practice. Patients with structural heart disease or card...
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One of the most controversial issues debated by cardiac electrophysiologists during the past decade has been whether programmed ventricular stimulation (PVS) plays any role in the arrhythmic risk stratification of the Brugada syndrome (BrS). The results of the multicenter study published in 2003 by the Brugada brothers were unequivocal. In a study involving 408 BrS individuals with no previous ...
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...
متن کاملRisk stratification for arrhythmic sudden cardiac death: identifying the roadblocks.
Athough it is difficult to determine the precise number, the range for the number of sudden cardiac deaths (SCDs) per year in the United States alone has been reported from 184 000 to 462 000,1 with estimates that 50% to 70% are due to tachyarrhythmic mechanisms. Regardless of where within this range the true number lies, this represents a large epidemiological problem that warrants serious att...
متن کاملExploiting rate-related hysteresis in repolarization alternans to improve risk stratification for ventricular tachycardia.
OBJECTIVES We sought to study the effect of heart rate acceleration and deceleration on the ability of repolarization alternans (RPA) to stratify ventricular tachycardia (VT) risk. BACKGROUND Heart rate fluctuations alter arrhythmic propensity, yet it is unclear whether fluctuations, as well as absolute rate, dynamically increase VT risk. We hypothesized that repolarization heterogeneity refl...
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ژورنال
عنوان ژورنال: World Journal of Cardiology
سال: 2016
ISSN: 1949-8462
DOI: 10.4330/wjc.v8.i1.57