Peer-reviewed veterinary case report
Survival and risk factors in small-breed dogs with mitral valve
By Kim, Hyun-Tae et al.·Published in Journal of veterinary science·2017·Department of Veterinary Internal Medicine, South Korea·View original on PubMed →
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Original publication title: Retrospective study of degenerative mitral valve disease in small-breed dogs: survival and prognostic variables.
- Species:
- dog
Plain-English summary
A group of small-breed dogs diagnosed with degenerative mitral valve disease (a heart condition) was monitored to see how long they lived after diagnosis. Symptoms like difficulty breathing (dyspnea) and fluid in the lungs (pulmonary edema) were linked to shorter survival times. The study found that certain heart measurements could help predict how long these dogs might live. Owners should be aware that if their dog shows signs of breathing problems, it could indicate a more serious prognosis.
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Abstract
Small-breed dogs (n = 168; weight ＜ 15 kg) diagnosed with myxomatous mitral valve degeneration based on a routine clinical examination, radiology, electrocardiography, and echocardiography at the Seoul National University Veterinary Medical Teaching Hospital were included in this study. Survival periods were determined, and there were significant differences in survival rates among the three International Small Animal Cardiac Health Council classes. The mean follow-up period was 14.3 ± 12.1 months. Univariate analysis revealed that dyspnea, pulmonary edema, and vertebral heart score were significantly associated with survival time (＜ 0.05). Additionally, age, left atrial-to-aortic root ratio, ejection fraction, and left ventricular end diastolic volume were associated with an increased risk of death (＜ 0.1), while body weight, body condition score, systolic blood pressure, arrhythmia, syncope, fractional shortening, and end systolic volume were not associated with an increased risk of death. These results suggest that among the assessed variables dyspnea, pulmonary edema, and vertebral heart score could be useful prognostic factors for providing patient information to owners.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/28057898/