T-wave alternans and dispersion of the QT interval as risk stratification markers in patients susceptible to sustained ventricular arrhythmias

A A Armoundas; M Osaka; T Mela; D S Rosenbaum; J N Ruskin; H Garan; R J Cohen

doi:10.1016/s0002-9149(98)00570-0

T-wave alternans and dispersion of the QT interval as risk stratification markers in patients susceptible to sustained ventricular arrhythmias

Am J Cardiol. 1998 Nov 1;82(9):1127-9, A9. doi: 10.1016/s0002-9149(98)00570-0.

Authors

A A Armoundas¹, M Osaka, T Mela, D S Rosenbaum, J N Ruskin, H Garan, R J Cohen

Collaborator

R J Cohen²

Affiliations

¹ Division of Health Sciences and Technology, Harvard University-Massachusetts Institute of Technology, Cambridge 02139, USA.
² MA Inst Tech, Cambridge

PMID: 9817496
DOI: 10.1016/s0002-9149(98)00570-0

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.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Adult
Aged
Arrhythmias, Cardiac / mortality
Arrhythmias, Cardiac / physiopathology*
Disease-Free Survival
Female
Heart Conduction System*
Humans
Male
Middle Aged
Predictive Value of Tests
Prognosis
Risk Assessment
Sensitivity and Specificity
Survival Analysis