Rhythmicity and contractility of the heart may be normal, but the stiff walls of the heart chambers (atria and ventricles) keep them from adequately filling, reducing preload and end-diastolic volume. Thus, blood flow is reduced, and blood volume that would normally enter the heart is backed up in the circulatory system. In time,<unk>  patients develop diastolic dysfunction and eventually heart failure.
Restrictive cardiomyopathy
Amyloid cardiomyopathy
Noncompaction cardiomyopathy
Dilated cardiomyopathy
Ischemic cardiomyopathy
Alcoholic cardiomyopathy
Hypertrophic cardiomyopathy
Viral cardiomyopathy