Restrictive cardiomyopathy (RCM) (a.k.a. Obliterative cardiomyopathy, once known as "constrictive cardiomyopathy") is a form of cardiomyopathy in which the walls are rigid, and the heart is restricted from stretching and filling with blood properly.
It is the least common of Goodwin's three original subtypes of cardiomyopathy, which includes hypertrophic and dilated as well as restrictive.
It should not be confused with constrictive pericarditis, a disease which presents similarly but is very
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