Evaluation of daily variations of blood pressure and heart rate by biotelemetry in beagles / Avaliação através de biotelemetria das flututações diárias da pressão arterial e freqüência cardíaca em cães da raça beagle

ABSTRACT

To investigate the continuous variations of four beagle bitches, with average age of 1 year and average weight of 9.2 ± 1.3 kg, a telemetry monitoring system was carried out for 24 hours. The evaluated parameters were heart rate (HR); systolic (SBP), mean (MBP) and diastolic blood pressure (DBP) and body temperature (BT). Data was submitted to a repeated measured one-way analysis of variance, followed by the Student-Newman-Keuls test (p£0.05). HR decreased from T570 to T870. Regarding SBP and BT, no changes were observed, whereas MBP decreased in T420 and T600, and DBP decreased in T420 when compared to values of T0. The biotelemetry system allowed identifying oscillations in clinical parameters owing to the low activity of bitches during night and dawn. KEY-WORDS Dogs. Biotelemetry. Circadian rhythms.