Cardiomyopathy Dilated cardiomyopathy Fyler:1843 Congestive cardiomyopathy SNOMEDCT_US:195021004 Cardiomyopathy, dilated HP:0200130 SNOMEDCT_US:399020009 Dilated cardiomyopathy (DCM) is defined by the presence of left ventricular dilatation and left ventricular systolic dysfunction in the absence of abnormal loading conditions (hypertension, valve disease) or coronary artery disease sufficient to cause global systolic impairment. Right ventricular dilation and dysfunction may be present but are not necessary for the diagnosis. Stretched and thinned heart muscle HP:0001725 HP:0001644 HP:0005159 UMLS:C0007193 DCM