title: T-wave alternans and dispersion of the QT interval as risk stratification markers in patients susceptible to sustained ventricular arrhythmias.
abstract: T-wave alternans and QT dispersion were compared as predictors of the outcome of electrophysiologic study and arrhythmia-free survival in patients undergoing electrophysiologic evaluation. T-wave alternans was a highly significant predictor of these 2 outcome variables, whereas QT dispersion was not.
authors.affiliation: Division of Health Sciences and Technology, Harvard University-Massachusetts Institute of Technology, Cambridge 02139, USA.
authors.forename: A A
authors.initials: AA
authors.lastname: Armoundas
authors.forename: M
authors.initials: M
authors.lastname: Osaka
authors.forename: T
authors.initials: T
authors.lastname: Mela
authors.forename: D S
authors.initials: DS
authors.lastname: Rosenbaum
authors.forename: J N
authors.initials: JN
authors.lastname: Ruskin
authors.forename: H
authors.initials: H
authors.lastname: Garan
authors.forename: R J
authors.initials: RJ
authors.lastname: Cohen
mesh_terms: D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000401:mortality / Q000503:physiopathology*; D018572:Disease-Free Survival; D005260:Female; D006329:Heart Conduction System; D006801:Humans; D008297:Male; D008875:Middle Aged; D011237:Predictive Value of Tests; D011379:Prognosis; D018570:Risk Assessment; D012680:Sensitivity and Specificity; D016019:Survival Analysis