An ECG may show arrhythmias or other abnormalities. A heart biopsy may be helpful to rule out other causes of cardiomyopathy. Laboratory tests vary depending on the suspected cause. Cardiomyopathy is classified as idiopathic when all known possible causes have been ruled out. Hospitalization may be required when symptoms are severe.
Treatment is focused on relief of symptoms.
It is essentially the same as the treatment of heart failure . Medications may include digitalis or other cardiac medications, diuretics, nutritional supplements, and other medications. A low-salt diet may be recommended. Fluid may be restricted in some cases. A heart transplant may be considered if heart function is very poor.