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Congestive heart failure associated with a large transverse left ventricular moderator band in a cat
Jonathan D Wray1, Isuru Gajanayake, Sionagh H Smith
1Willows Referral Service, 78 Tanworth Lane, Shirley, Solihull, W. Mids B90 4DF, UK. jonathan.wray@aht.org.uk <jonathan.wray@aht.org.uk>
Insights
Rarely reported cardiomyopathy in cats involves abnormal trabecular bands. This case details a unique ventricular septal band causing congestive heart failure and other cardiac issues in a feline patient.
Area of Science:
- Veterinary Cardiology
- Comparative Pathology
Background:
- Cardiomyopathy in cats can manifest with diverse cardiac abnormalities.
- Abnormal trabecular bands are a rare finding within feline ventricles.
Observation:
- A 9-year-old cat presented with clinical signs of congestive heart failure.
- Physical examination revealed multiple cardiac abnormalities, including a large trabecular band bisecting the left ventricle.
Findings:
- The cat exhibited arrhythmia, thrombocytopenia, and elevated serum creatine kinase.
- Necropsy confirmed a large trabecular band dividing the left ventricle, mitral valve thickening, left atrial dilation, and myocardial fibrosis with necrosis.
Implications:
- This case presents unique pathological findings distinct from previously documented feline ventricular transverse bridging tissue.
- Understanding these rare anatomical variations is crucial for diagnosing and managing feline cardiac disease.
Abstract:
Cardiomyopathy associated with abnormal trabecular bands of tissue traversing one or both ventricles is reported rarely in cats. The case of a 9-year-old cat which presented in congestive heart failure is reported. Multiple cardiac abnormalities were found, including a large trabecular tissue bridge which bisected the left ventricle. Other findings included arrhythmia, thrombocytopaenia and raised serum creatine kinase. The cat was euthanased due to clinical deterioration. Necropsy findings included increased cardiac weight, the division of the left ventricle by a large trabecular band composed of connective tissue and cardiac myofibres consistent with a moderator band, nodular thickening of the mitral valve, left atrial dilation, and fibroplasia/fibrosis of the left ventricular myocardium associated with widespread myofibre necrosis due to infarction. Pathological findings in this case differ from previous reports of ventricular transverse bridging tissue in cats with cardiac disease.
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