Peer-reviewed veterinary case report
How anxiety affects heart function in dogs
By Soghyani, Delara et al.·Published in BMC veterinary research·2025·Department of Clinical Science·View original on PubMed →
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Original publication title: The impact of anxiety on canine heart function: a study using echocardiographic techniques.
- Species:
- dog
Plain-English summary
A study found that anxious dogs may experience changes in heart function compared to healthy dogs. The researchers looked at 36 dogs with anxiety and found that those with general anxiety had increased heart function measurements, while dogs with specific fears, like loud noises, showed larger heart dimensions. Nearly half of the anxious dogs also had irregular heart rhythms. These findings suggest that anxiety can affect a dog's heart health, so it's important for pet owners to discuss any signs of anxiety with their veterinarian to monitor their dog's heart function and overall well-being.
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Abstract
Canine anxiety is increasingly recognized in veterinary practice, yet its cardiovascular effects remain poorly defined. This study evaluated 36 anxious dogs and 20 healthy controls using the validated Canine Behavioral Assessment and Research Questionnaire (C-BARQ) and standardized echocardiography. Significant associations were identified between anxiety subtypes and cardiac parameters: general anxiety correlated with increased fractional shortening (FS%; r = 0.663, p = 0.001), phonophobia with larger left ventricular internal dimension in diastole (LVIDd; r = 0.681, p < 0.001), and aggression with a higher left atrial-to-aortic root ratio (LA/Ao; r = 0.475, p = 0.008). Rhythm irregularities were suspected in nearly half of anxious dogs, though classification was limited without ECG confirmation. By contrast, correlations in controls were weak and non-significant.These results provide novel evidence that chronic behavioral anxiety is associated with measurable echocardiographic alterations in dogs, paralleling mechanisms described in human psychocardiology. Incorporating behavioral screening into routine veterinary practice may support early identification and monitoring of dogs at risk for anxiety-related cardiac changes. Larger longitudinal studies with matched controls, ECG verification, and size-indexed parameters are warranted to confirm causality and guide preventive care strategies.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/41088226/