Unclassified Cardiomyopathy - Feline Cardiomyopathies

Overview

Feline unclassified cardiomyopathy (UCM)could represent an early or late stage of another recognised form of cardiomyopathy. Some segmental myocardial changes accompanied by ventricular dysfunction may also occur secondary to myocardial ischaemia and infarction. End-stage HCM, in particular, presents with relative thinning of the left ventricular myocardium with dilation of the ventricular lumen as well as a reduction in fractional shortening. Myocardial remodelling can also result from unrecognised or underdiagnosed valvular or pericardial abnormalities. Therefore, it is unlikely that UCM represents a distinct form of cardiomyopathy.

UCM is a diagnosis used for cats with a cardiomopathy that does not fit the classification criteria for any of the other recognised feline cardiomyopathies.