PAPILLARY MUSCLE EVALUATION IN HEALTHY CATS AND CATS WITH HYPERTROPHIC CARDOMYOPATHY
DOI:
https://doi.org/10.31548/ujvs2019.03.013Abstract
This article examines the problem of estimating early echocardiographic changes in cats of different breeds at diagnostics of hypertrophic cardiomyopathy. It is known that the disease in most cats is asymptomatic. Signs of fluid retention (congestive failure) are often the only abnormalities observed by the owners, such as tachypnea/dyspnea secondary to pulmonary edema and/or pleural effusion and thromboembolism. The first sign could be the sudden death. The majority of cats with heart failure present clinical signs relating to an impairment of left ventricular myocardial function. Left ventricular functional abnormalities in cats are often observed in patients with hypertrophic ventricular wall and reduced ventricular lumen. But hypertrophic cardiomyopathy may have miscellaneous changes on ultrasound. The most common changes are thickening of the interventricular septum and left ventricle posterior wall. But there is also a local form of hypertrophy exist. It can affect only papillary muscles. There are several scientific publications, which describe reference values for the interventricular septum and left ventricular posterior wall. Unfortunately, evaluation of papillary muscles is not sufficiently showed. The authors focused not only on papillary muscles measurements, but also a comparative characteristic between the British Shorthair cats and domestic shorthaired cats.
The purpose of this study was to evaluate the size of papillary muscles in the British Shorthair cats and domestic shorthaired cats and evaluate this parameter in early diagnostics of hypertrophic cardiomyopathy. Study tested the possible difference of pupillary muscles size in animals of two breeds (British Shorthair and Domestic Shorthair) and to determine the reference values for papillary muscles size for British Shorthair cats.
Key words: domestic cat, British shorthaired breed, domestic shorthaired breed, hypertrophic cardiomyopathy, size of papillary muscles.
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