Cardiomyopathy Cardiomyopathy is a progressive heart disease that may affect heart function. Examples of cardiomyopathy include: Dilated cardiomyopathy Hypertrophic cardiomyopathy Restrictive cardiomyopathy Ischemic cardiomyopathy Dilated Cardiomyopathy In dilated cardiomyopathy the heart's four chambers enlarge. Dilated cardiomyopathy is the most common…