Peer-reviewed veterinary case report
Double-chambered right ventricle heart defect in dogs explained
By Fukushima, Ryuji et al.·Published in The Journal of veterinary medical science·2011·Department of Veterinary Surgery, Japan·View original on PubMed →
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Original publication title: Epidemiological and morphological studies of double-chambered right ventricle in dogs.
- Species:
- dog
Plain-English summary
A group of eleven dogs with a rare heart condition called double-chambered right ventricle (DCRV) were studied to understand its effects. These dogs, mostly small breeds like Pugs and Miniature Dachshunds, showed symptoms of heart problems, including issues with the tricuspid valve and other heart defects. Over time, the pressure in their hearts increased, leading to worsening heart failure. Unfortunately, DCRV is a congenital issue that can get worse as the dog ages, and treatment options may be limited.
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Abstract
The double-chambered right ventricle (DCRV) is a rare congenital cardiac disease in dogs, and its detailed epidemiological and morphological features are not clearly understood. By investigating the profile, clinical signs, and characteristics of examination findings of eleven dogs with DCRV by means of a retrospective study, we attempted to clarify the epidemiology and morphology of the condition. The study group consisted of nine males and two females. Breeds included Pug (n=3), Miniature Dachshund (n=1), French Bull-dog (n=1), Shiba (n=1), and Retrievers (n=5). The attachment site of the anomalous muscular bundle was continuous with the cardiac apex in nine dogs, and it was attached to the right ventricle free wall in the other two dogs. In dogs with DCRV, at least one of the following conditions was present concurrently: congenital or acquired tricuspid valve regurgitation (TR), ventricular septal defect, and atrial septal defect. Also, the pressure difference between the two chambers increased over time, and progressive right-sided heart failure was observed. In summary, DCRV occurs in small breeds of dog as well as in large breeds of dog and it may be more prevalent in males. The existence of two types of DCRV in dogs was established. Dog with DCRVs will have a high incidence of concurrent cardiac abnormalities. Concurrent TR may be either congenital or acquired. DCRV is a congenital disorder, but the clinical condition progresses as the dog develops.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/21646754/