Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/70016
Type: Conference paper
Title: Beat-to-beat QT interval variability in the 12 lead ECG
Author: Hasan, M.
Abbott, D.
Baumert, M.
Citation: Proceedings of Computing in Cardiology, 2011: pp. 61-64
Publisher: IEEE
Publisher Place: online
Issue Date: 2011
ISBN: 9781457706127
ISSN: 2325-8861
2325-887X
Conference Name: Computing in Cardiology (2011 : Hangzhou, China)
Statement of
Responsibility: 
Muhammad A. Hasan, Derek Abbott, Mathias Baumert
Abstract: Beat-to-beat QT interval variability (QTV) is a marker of ventricular repolarization lability. Increased QTV has been associated ith cardiac mortality. The aim of this paper was to investigate QTV in the 12-lead ECG and the potential effect of age. Short-term ECGs (2 mins) of 48 healthy males ere studied. Beat-to-beat QTV as measured in each lead by using Berger's template-stretching algorithm. We observed significant differences in QTV of different leads (ANOVA test: p < 0.0001). In addition, e investigated the effect of age by dichotomizing the data set based on the median age. Two-ay ANOVA showed no significant differences in QTV of older males compared to younger males. In conclusion, the magnitude of QTV depends on the lead selected for measurement.
Rights: Copyright the authors.
RMID: 0020115826
Appears in Collections:Electrical and Electronic Engineering publications

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