The application of Lempel-Ziv and Titchener complexity analysis for equine telemetric electrocardiographic recordings
Vadim Alexeenko1,2, James A Fraser2, Alexey Dolgoborodov3
1Faculty of Health and Medical Sciences, University of Surrey, Guildford, GU2 7AL, United Kingdom.
Abstract:
The analysis of equine electrocardiographic (ECG) recordings is complicated by the absence of agreed abnormality classification criteria. We explore the applicability of several complexity analysis methods for characterization of non-linear aspects of electrocardiographic recordings. We here show that complexity estimates provided by Lempel-Ziv '76, Titchener's T-complexity and Lempel-Ziv '78 analysis of ECG recordings of healthy Thoroughbred horses are highly dependent on the duration of analysed ECG fragments and the heart rate. The results provide a methodological basis and a feasible reference point for the complexity analysis of equine telemetric ECG recordings that might be applied to automate detection of equine arrhythmias in equine clinical practice.
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