T-wave alternans and dispersion of the QT interval as risk stratification markers in patients susceptible to sustained ventricular arrhythmias.
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.
Armoundas
A A
AA
Division of Health Sciences and Technology, Harvard University-Massachusetts Institute of Technology, Cambridge 02139, USA.
Osaka
M
M
Mela
T
T
Rosenbaum
D S
DS
Ruskin
J N
JN
Garan
H
H
Cohen
R J
RJ
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