Rapid response to treatment of heart failure resulting from hypocalcemic cardiomyopathy.

Hypocalcemia is a rare condition that causes dilated cardiomyopathy and can result in heart failure. Patients with hypocalcemia have been reported to recover in 3 to 12 months after calcium and vitamin D replacement therapy as well as treatment of heart failure. A 6-month-old male patient who presented with dyspnea was admitted to the intensive care unit with severe heart failure and dilated cardiomyopathy. Blood biochemistry revealed hypocalcemia and vitamin D deficiency. After administration of anticongestive treatment, positive inotropic support, as well as vitamin D and calcium supplementation, cardiac function returned to normal in a week. Our case is the first report of such a rapid improvement in cardiac morphology and function in a patient with hypocalcemic dilated cardiomyopathy and heart failure.