Banca de DEFESA: MÁRIO DOS SANTOS FILHO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : MÁRIO DOS SANTOS FILHO
DATA : 26/02/2019
HORA: 10:00
LOCAL: Salão Verde do Instituto de Veterinária da UFRRJ
TÍTULO:

Study of heart rate variability through continuous electrocardiography (holter) in dogs with brachycephalic syndrome, before and after rhinoplasty

PALAVRAS-CHAVES:

Airways disease. Brachycephalic syndrome. Autonomic balance. Dogs.

PÁGINAS: 100
GRANDE ÁREA: Ciências Agrárias
ÁREA: Medicina Veterinária
RESUMO:

Filho, Mário dos Santosi. Study of heart rate variability through continuous electrocardiography (holter) in dogs with brachycephalic syndrome, before and after rhinoplasty. 2019. Dissertation (Master of Veterinary Medicine, Pathology and Clinical Sciences). Instituto de Veterinária, Universidade Federal Rural do Rio de Janeiro, Seropédica, RJ, 2019.

 

Brachycephalic breeds are increasingly present in homes. The crossing of these breeds in the intention to reach specific characters like shorter muzzles, allowed obstructive anatomical anatomical characteristics of the upper airways, which together form the brachycephalic dog syndrome. Some of the alterations found in these animals are the elongated soft palate and the stenosis of the nostrils. These dogs have a higher vasovagal tonus index than non-brachycephalic dogs. The obstructive upper airway process impairs inspiratory work by reducing the normal parasympathetic inhibition of this phase of the respiratory cycle. In addition, it is known that during periods of rest, the predominance of the vagal stimulus may result in large pauses between the heart beats, observed mainly during sleep, which may also be exacerbated in the brachycephalic races. This increase in the parasympathetic tone reflects an increase in heart rate variability (HRV). Continuous electrocardiography allows the evaluation of HRV (heart rate variation set over time), indicating the autonomic modulation of the heart. Therefore, the study of HRV in the brachycephalic races, before and after the surgical correction of nostril stenosis, may bring to light the knowledge of the excess of parasympathetic stimulation in relation to the occurrence of bradyarrhythmias and their clinical consequences, and the possibility of improving the autonomic balancing after treatment, increasing the quality and life expectancy of these patients.

MEMBROS DA BANCA:
Presidente - 4563410 - JULIO ISRAEL FERNANDES
Externo à Instituição - ALEXANDRE JOSÉ RODRIGUES BENDAS
Externo à Instituição - CRISTIANO CHAVES PESSOA DA VEIGA