Key result
T-wave alternans was positive in 86% of patients with arrhythmogenic right ventricular cardiomyopathy compared to 8% of patients with idiopathic right-ventricular outflow tract tachycardia.
Why the study?
Does the prevalence of T-wave alternans differ between patients with ARVC and idiopathic right ventricular tachycardia?
Population
20 patients with arrhythmogenic right ventricular cardiomyopathy or idiopathic ventricular tachycardia…
Design
Cross-sectional
Authors
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May support T-wave alternans to differentiate ARVC from idiopathic RVOT tachycardia; leaves open prospective validation before clinical adoption.
Observational (n=20)
Does the prevalence of T-wave alternans differ between patients with ARVC and idiopathic right ventricular tachycardia?
Absolute Event Rate: 86% vs 8%
T-wave alternans is frequently positive in ARVC but rare in idiopathic right ventricular outflow tract VT, suggesting potential utility in differentiating these conditions.
Kinoshita et al. (2003) conducted an observational in Ventricular tachycardia originating from the right ventricle (n=20). Arrhythmogenic right ventricular cardiomyopathy (ARVC) vs. Idiopathic VT originating from the right-ventricular outflow tract was evaluated on Positivity for T-wave alternans. T-wave alternans was positive in 86% of patients with arrhythmogenic right ventricular cardiomyopathy compared to 8% of patients with idiopathic right-ventricular outflow tract tachycardia.
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