Abstract
Study of heart rate variability in dogs with brachycephalic syndrome that underwent rhinoplasty
Highlights
Brachycephalic syndrome is characterized by a combination of primary anatomical soft tissue deformities involving the upper airways
It was necessary to adopt as an inclusion criterion upper airway obstruction, nasal stenosis, which is easy to measure being based on the physical evaluation of the patient
Since nasal stenosis was the first criterion used for selecting the animals that would constitute the experimental group, other demographic data such as breed, sex, and reproductive status were not set as selection criteria
Summary
Brachycephalic syndrome is characterized by a combination of primary anatomical soft tissue deformities involving the upper airways. This set of abnormalities leads to increased resistance to the passage of air through the upper airways due to the obstruction and a consequent increase in the amount of negative pressure required for inspiration, which translates clinically into respiratory distress. Once surgical correction of the obstructed airway has been performed, the reestablished airflow reduces respiratory work and the resulting hypoxia, which may be reflected by a significant improvement in HRV. The aim of this study was to determine HRV via prolonged electrocardiography in dogs with brachycephalic syndrome undergoing rhinoplasty The assessment of heart rate variability (HRV), or the change in heart rate over time, indicating autonomic modulation of the heart, is related to the prognosis and determination of the risk of death in some conditions, as well as to the somatic control over the variable intrinsic and extrinsic factors to which organisms are exposed.
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