title: Statistical analysis of QT/RR hysteresis in healthy horses.
abstract: The paper describes experiments and their results that offered an insight to relationship between RR and QT intervals in equine ECG signals recorded under various conditions. In contrast to human heart in a great number of cases the QT intervals prolonged with a heart rate acceleration. Peak-to-peak differences between maximum and minimum RR intervals during the excitation response in non-standard responses were twice as smaller as in standard responses and the lengths of QT intervals were significantly longer in the non-standard records. This fact means that the electrical processes in equine heart ventricles must be controlled by different mechanisms than in human heart.
authors.affiliation: Faculty of Biomedical Engineering, Dept. of Biomedical Informatics, Czech Technical University in Prague, nam. Sitna 3105, Kladno, Czech Republic.
authors.forename: Petr
authors.initials: P
authors.lastname: Kozelek
authors.forename: Jiri
authors.initials: J
authors.lastname: Holcik
authors.forename: Marketa
authors.initials: M
authors.lastname: Sedlinska
mesh_terms: D000818:Animals; D003198:Computer Simulation; D003627:Data Interpretation, Statistical; D006339:Heart Rate / Q000502:physiology*; D006736:Horses / Q000502:physiology*; D008955:Models, Cardiovascular; D015233:Models, Statistical; D012016:Reference Values; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity