title: Measurement of T wave variability in body surface ECG.
abstract: Lability in the ventricular repolarization process has been associated with an increased risk of experiencing ventricular tachycardia or fibrillation. A number of risk predictors have been devised that quantify beat-to-beat variability in the T wave morphology of body surface ECG. Initial studies have suggested that measurement of T wave variability may yield important prognostics markers of cardiac mortality, but approaches and experimental designs vary. The aim of this contribution is to provide an overview of existing techniques as well as discuss some of the methodical considerations.
authors.affiliation: School of Electrical and Electronic Engineering, The University of Adelaide, Australia. Electronic address: mathias.baumert@adelaide.edu.au.
authors.forename: Mathias
authors.initials: M
authors.lastname: Baumert
mesh_terms: D000465:Algorithms; D018780:Body Surface Potential Mapping / Q000379:methods*; D003936:Diagnosis, Computer-Assisted / Q000379:methods; D004562:Electrocardiography / Q000379:methods*; D019317:Evidence-Based Medicine; D000070276:Heart Rate Determination / Q000379:methods*; D006801:Humans; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D017180:Tachycardia, Ventricular / Q000175:diagnosis*; D014693:Ventricular Fibrillation / Q000175:diagnosis*
keywords: ECG; Repolarization; T wave variability