Short-term and long-term PQ, QT and R-R intervals' variability at the resting condition and after exercise testing in healthy Anglo-Arabian horses.
Pol J Vet Sci
; 15(1): 55-9, 2012.
Article
en En
| MEDLINE
| ID: mdl-22708358
ABSTRACT
UNLABELLED The duration of electrocardiographic (ECG) parameters PQ, QT and R-R intervals change during long-term and short-term observation as the consequence of the fluctuations in autonomic nervous system activity among others dependent on the exercise and resting. There is no data of horse breed influence on these parameters. The aim of the study was to assess the duration and the variability of the PQ, QT and R-R intervals in the resting conditions and after exercise testing in Anglo-Arabian horses. MATERIAL AND METHODS:
27 healthy Anglo-Arabian horses aged 3.4 +/- 1.0 years (15 male, 12 female) had ECG examination in the standing position using Einthoven system of leads. The longest and the shortest PQ, QT and R-R intervals were measured after night rest and after exercise testing and the means were calculated.CONCLUSIONS:
1) In Anglo-Arabian horses the difference between the longest and the shortest PQ interval at rest vs. after exercise is 0.06 +/- 0.05 vs. 0.03 +/- 0.02, QT interval is 0.04 +/- 0.03 vs. 0.04 +/- 0.04, R-R interval 0.19 +/- 0.15 vs. 0.08 +/- 0.11. 2) The PQ and R-R intervals reveal high short-term variability either at the resting conditions or after exercise testing. 3) After exercise testing PQ, QT and R-R intervals are shorter than at the resting conditions. The delta PQ and R-R are 2 times smaller in contrast to delta QT which is constant. 4) The PQ and R-R interval variability was greater at the baseline condition than after exercise testing. The QT variability was similar at baseline condition to that after exercise testing.
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Base de datos:
MEDLINE
Asunto principal:
Condicionamiento Físico Animal
/
Electrocardiografía
/
Caballos
Límite:
Animals
Idioma:
En
Revista:
Pol J Vet Sci
Asunto de la revista:
MEDICINA VETERINARIA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Polonia