Peer-reviewed veterinary case report
Heart rate variability differences in dogs with sick sinus syndrome
By Bogucki, Sz & Noszczyk-Nowak, A·Published in Polish journal of veterinary sciences·2017·.·View original on PubMed →
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Original publication title: Short-term heart rate variability in dogs with sick sinus syndrome or chronic mitral valve disease as compared to healthy controls.
- Species:
- dog
Plain-English summary
A group of dogs with heart problems, specifically sick sinus syndrome (SSS) and chronic mitral valve disease (CMVD), were studied to see how their heart rate variability compared to healthy dogs. The researchers found that dogs with SSS had significant differences in their heart rate patterns, indicating lower heart rate variability, which can be a sign of heart issues. This suggests that measuring heart rate variability could help veterinarians identify dogs with SSS and assess heart function in dogs with CMVD. Understanding these patterns may lead to better monitoring and treatment options for affected dogs.
People also search for: dog sick sinus syndrome symptoms · heart rate variability in dogs · chronic mitral valve disease treatment
Abstract
Heart rate variability is an established risk factor for mortality in both healthy dogs and animals with heart failure. The aim of this study was to compare short-term heart rate variability (ST-HRV) parameters from 60-min electrocardiograms in dogs with sick sinus syndrome (SSS, n=20) or chronic mitral valve disease (CMVD, n=20) and healthy controls (n=50), and to verify the clinical application of ST-HRV analysis. The study groups differed significantly in terms of both time - and frequency- domain ST-HRV parameters. In the case of dogs with SSS and healthy controls, particularly evident differences pertained to HRV parameters linked directly to the variability of R-R intervals. Lower values of standard deviation of all R-R intervals (SDNN), standard deviation of the averaged R-R intervals for all 5-min segments (SDANN), mean of the standard deviations of all R-R intervals for all 5-min segments (SDNNI) and percentage of successive R-R intervals >50 ms (pNN50) corresponded to a decrease in parasympathetic regulation of heart rate in dogs with CMVD. These findings imply that ST-HRV may be useful for the identification of dogs with SSS and for detection of dysautonomia in animals with CMVD.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/28525326/