Heart rate variability for small animal veterinarians - A concise debate


heart rate variability, veterinary cardiology, autonomic nervous system, small animals, cardiac interval.

How to Cite

Fernandes, L. G., & Seara, F. de A. C. (2021). Heart rate variability for small animal veterinarians - A concise debate. Brazilian Journal of Veterinary Medicine, 43(1), e003621. https://doi.org/10.29374/2527-2179.bjvm003621


This manuscript aims to provide a simple and concise discussion on heart rate variability (HRV) for small animal veterinarians. Despite the fact that heart rate variability analysis techniques have been used for quite a long time in medical sciences, it seems to be not completely understood by a large fraction of veterinarian professionals, thereby, reducing the possible benefits to patients that could arise from such information. The analysis of the R-R intervals enables the veterinarian to evaluate autonomic sympathetic and parasympathetic modulation of the heart, composing the so-called cardiac autonomic balance. Several pathophysiological states lead to profound changes in autonomic balance, especially in the cardiovascular system. Therefore, heart rate variability methods remain a valuable and powerful tool for the diagnosis and prognosis of cardiovascular diseases.



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Copyright (c) 2021 Luciano Gonçalves Fernandes, Fernando de Azevedo Cruz Seara