The number of years you can live with dilated cardiomyopathy needs to be analyzed on a case-by-case basis, and the relative prognosis for this disease is poor. Generally after the diagnosis of dilated cardiomyopathy, the survival rate may reach 50% at 5 years and only about 25% at 10 years. Some patients have survived up to about 20 years with pharmacologic interventions and regular health care. Dilated cardiomyopathy is a class of cardiomyopathy characterized by enlargement of the left ventricle or both ventricles with systolic dysfunction. The disease also has a certain family heredity, if there are patients with dilated cardiomyopathy in the family, it is best for the family to check, infection, poisoning or endocrine metabolic disorders can also lead to dilated cardiomyopathy.