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T wave and QT interval in the Standardbred horse: A descriptive study

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dc.contributor.advisor Hanna, Brad
dc.contributor.advisor Physick-Sheard, Peter Preiss, Erin 2016-09-06T18:54:31Z 2016-09-06T18:54:31Z 2016 2016-08-12 2016-09-06
dc.description.abstract The human T wave and QT interval are well characterized. As long and short QT interval and QT interval dispersion are associated with arrhythmias and sudden death, influential factors, methods of measurement and heart rate (HR) correction are numerous. In horses, significance has been attached to QRS duration, T morphology, and QT interval, but clinical associations are not well supported and measurement not standardized. This study used holter monitoring of clinically normal Standardbred horses at rest and during exercise to develop an automated algorithm for measurement of T characteristics and QT interval. The algorithm was tested on 545 ECG segments of 12 successive RR intervals and successfully identified 97.0% of key waveform points. QT onset and offset were reliably identified 99.8% and 94.5% of the time respectively. While longitudinal studies will be required, this algorithm should aid in establishing normal equine QT intervals and accurate HR correction methods. en_US
dc.language.iso en en_US
dc.rights Attribution-NonCommercial-NoDerivs 2.5 Canada *
dc.rights.uri *
dc.subject Equine en_US
dc.subject QT interval en_US
dc.subject T wave en_US
dc.subject Algorithm en_US
dc.title T wave and QT interval in the Standardbred horse: A descriptive study en_US
dc.type Thesis en_US Biomedical Sciences en_US Master of Science en_US Department of Biomedical Sciences en_US
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Attribution-NonCommercial-NoDerivs 2.5 Canada Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivs 2.5 Canada