In general, there are four types of heart disease seen in cats: HCM-hypertrophic cardiomyopathy, RCM-restrictive cardiomyopathy, DCM-dilated cardiomyopathy, and ARVC-Arrhythmogenic Right Ventricular Cardiomyopathy. And then there are variations on a theme, such as Feline Moderator Band Cardiomyopathy. While each might affect the heart function differently and may have unique symptoms, all affect the ability of the heart to fully function, can lead to congestion and impaired breathing ability, blood clots, heart attacks, and eventually death.
What is Moderator Band Cardiomyopathy
Very little is known of Moderator Band Feline Cardiomyopathy. They are bands of tissue that attach between walls in the Left Ventricle, restricting the work of the heart valves to properly open and close, much like in hypertrophic cardiomyopathy hearts. Research assumes they exist in the heart and are not found until symptoms from disease progress causing maybe heart failure or CHF. Our Cooper had two echos in the first five years of his life and neither showed evidence of heart disease. So, it is possible that it can develop later in life and NOT be present at birth. There is little data on progression of the disease, the effect on the heart, or about medication to treat the condition, or how well patients respond. Typically, vets prescribe medications to treat symptoms.
Harpsie-a person's website about their cat experience that discusses feline diseases with links to further information.
A link to Long Beach California vet hospital's discussion re: HCM. Useful terms, descriptions, and illustrations.