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Hypertrophic Cardiomyopathy
The most common heart disease in cats, characterized by abnormal thickening of the left ventricular wall that reduces the heart's ability to fill and pump blood effectively.
Key Facts
- HCM affects approximately 15% of cats and is especially prevalent in Maine Coons, Ragdolls, and British Shorthairs.
- Many cats are asymptomatic for years; a heart murmur or gallop rhythm may be the only finding on examination.
- Severe cases can lead to congestive heart failure, pleural effusion, or aortic thromboembolism.