Peer-reviewed veterinary case report
How mitral valve disease severity affects dog blood cell levels
By Wilshaw, J et al.·Published in The Journal of small animal practice·2021·Department of Clinical Science and Services, United Kingdom·View original on PubMed →
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Original publication title: The effect of myxomatous mitral valve disease severity on packed cell volume in dogs.
- Species:
- dog
Plain-English summary
A study looked at dogs with myxomatous mitral valve disease, a common heart condition, to see how the severity of the disease affected their packed cell volume (a measure of red blood cells in the blood). It found that dogs in the earlier stages of the disease had lower packed cell volumes compared to those in the most advanced stage. Interestingly, dogs in the advanced stage had higher packed cell volumes, possibly due to treatment with diuretics, which can affect blood volume. While the changes in packed cell volume were significant on a larger scale, they might be hard to notice in individual dogs.
People also search for: dog heart disease symptoms · myxomatous mitral valve disease treatment · low packed cell volume in dogs
Abstract
OBJECTIVES: The aim of this study was to examine whether associations between disease severity and packed cell volume exist in dogs with myxomatous mitral valve disease. MATERIALS AND METHODS: Data were selected from 289 dogs that had been examined at a research clinic (2004-2017) on multiple occasions (n=1465). American College of Veterinary Internal Medicine stage and echocardiographic measurements were entered in separate multivariable linear mixed effects models with packed cell volume as the dependent variable. Age, breed, sex, weight and blood urea nitrogen concentrations were additionally tested in these analyses to control for patient characteristics. RESULTS: Packed cell volume (% whole blood) in stages B1 and B2 (B1: 42.62 ±0.27, P=0.001; B2: 41.77± 0.42, P < 0.001) was lower than stage A (44.57 ±0.53). In stage C, packed cell volume was greater than both preclinical stages (C: 43.84 ±0.46). When the administration of loop diuretics was included in statistical models, packed cell volume was inversely related to normalised left ventricular internal diameters (β: -2.37; 95% confidence intervals: -3.49, -1.25; P < 0.001). CLINICAL SIGNIFICANCE: Dogs with myxomatous mitral valve disease may develop reductions in packed cell volume as their disease progresses. Although this finding was statistically significant at a population level, it should be noted that the differences described are relatively small. This, along with other causes of variation in packed cell volume, means that changes would be challenging to appreciate within individual patients. Plasma volume depletion following diuretic administration may explain why findings differed in stage C.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/33599987/