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An algorithm for the quantification of ST-T segment variability.

S E Greenhut·B H Chadi·J W Lee·J M Jenkins·J M Nicklas
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Abstract

A template boundary algorithm which quantitatively determines repolarization (ST-T segment) variability in a normal population has been developed. The algorithm defines an initial ST-T template for comparison with successive beats. Variability is quantified using boundary limits around the template which are widened, when necessary, to included incoming ST-T segments. The boundaries at the end of each hour are stored and the collection of boundaries over a set of normal subjects quantifies the normal variation over the entire ST-T segment. The algorithm can be used to determine prospectively normal ST-T variability based on a regression analysis of R-wave or T-wave amplitude, and QT interval. Application of these boundary predictions should be useful in distinguishing repolarization changes secondary to ischemia from normal variability.

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AlgorithmsCoronary DiseaseElectrocardiographyHumansReference ValuesSoftwareJournal ArticleResearch Support, U.S. Gov't, P.H.S.

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S E Greenhut, B H Chadi, J W Lee, J M Jenkins, J M Nicklas. 1989. An algorithm for the quantification of ST-T segment variability.. https://doi.org/10.1016/0010-4809(89)90029-3

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