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Cats are most often diagnosed when they have no symptoms but when a veterinarian detects a heart murmur or an irregular heart beat during a wellness exam. Thickening of the muscles stiffens them and makes it harder for the heart to pump blood efficiently. Hypertrophic cardiomyopathy is the most common primary myocardial (heart muscle) disease in cats, representing approximately 60% of heart diseases diagnosed in this species. Other causes conditions that might lead to heart disease similar to that of hypertrophic cardiomyopathy include: acromegaly, arterial hypertension , and even subaortic stenosis (chiefly a canine problem). Photo courtesy of Morris Animal Foundation. Evidence is provided to support the concept that HCM in humans and felines are fundamentally the same disease Read on to learn more about this condition that can seriously affect your cat's health. The disease is characterised by thickened muscle … Methods: Contemporary clinical and scientific findings were selected from the literature. (HCM) can affect both random bred and pedigreed cats. It rarely occurs in dogs. Hypertrophic cardiomyopathy (HCM) – this is the most common form of heart disease in cats and occurs where there is an increase in the thickness of the muscular wall of the heart. Cardiomyopathy in Cats There are two forms of cardiomyopathy in cats : Dilated (the heart wall becomes thin) and hypertrophic (the heart wall thickens). FELINE HYPERTROPHIC CARDIOMYOPATHY Hypertrophic cardiomyopathy is a heart (cardio-) muscle disease (-myopathy) and is the most common form of heart disease is cats. J Feline Med Surg 5 (4), 209-216 PubMed. Hypertrophic cardiomyopathy (HC/HCM) is the most prevalent feline cardiac disorder. Hypertrophic cardiomyopathy (HCM) often goes undiagnosed until a cat is in heart failure. Anatomy of the heart of a cat HCM is a disease that causes thickening of the heart muscle resulting in poor relaxing and filling ability.As the heart’s pumping chamber (ventricle) becomes progressively thicker, … The hallmark feature of HCM is thickening of the left ventricular wall. A veterinarian can identify breathing difficulties, a systolic murmur, tachycardia, arrhythmias, dyspnea, or even paralysis in the posterior limbs. This is why veterinarians often don’t detect the disease early. Characterized by regional or diffuse thickening of the walls of the ventricle (the primary "pump" muscle of the heart), HCM has been diagnosed in cats as young as 4 months old and as old as 16 years old. In humans, there is an important hereditary predisposition for HCM in … Often cats will alter their activity levels to those that … Hypertrophic cardiomyopathy can progress rapidly in some cats, while in others, the condition remains relatively static for years. It affects most commonly middle-aged cats (average 6.5 years), but all ages are affected. Hypertrophic Cardiomyopathy (HCM) This information is not meant to be a substitute for veterinary care. Many cats with hypertrophic cardiomyopathy have no visible symptoms. Connolly D J, Cannata J, Boswood A et al (2003) Cardiac troponin I in cats with hypertrophic cardiomyopathy. CAUSE: Hypertrophic cardiomyopathy (HCM) is the most commonly diagnosed cardiac disease in cats. Hypothesis/objectives: We hypothesized that LA echocardiographic … HCM is the most common form of heart disease in cats and is the result of a genetic mutation(s). Always follow the instructions provided by your veterinarian. This disease is thought to be genetic; therefore, there is no preventative care. Many cats will have slowly progressive disease that ultimately leads to congestive heart failure. Hypertrophic cardiomyopathy in cats is more common in male cats than female cats, and the average age of onset is between five to seven years, though kittens as young as three months may be at risk. It may lead to congestive heart failure (CHF) if not treated in time. Hypertrophic cardiomyopathy in cats is a very common disease. Hypertrophic cardiomyopathy (HCM) is a rare form of heart muscle disease. Unlike cardiomyopathy patients, cats with hyperthyroidism are likely to find that their heart muscle changes resolve in time when their metabolic state is corrected. Thicker walls in the heart means that the chambers that hold blood become smaller, due to the walls taking up more space. hypertrophic, restrictive, and dilated. Chief among these conditions are hypertrophic cardiomyopathy (HCM) in the cat as well as arrhythmic right ventricular cardiomyopathy in cats and Boxer dogs, and non-hypertrophied restrictive cardiomyopathy in cats. 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