Statistical analysis of QT/RR hysteresis in healthy horses.
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.
Kozelek
Petr
P
Faculty of Biomedical Engineering, Dept. of Biomedical Informatics, Czech Technical University in Prague, nam. Sitna 3105, Kladno, Czech Republic.
Holcik
Jiri
J
Sedlinska
Marketa
M
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