Unusual cause of myocardial ischemia in an infant.

Abnormal coronary artery anatomy should be ruled out in any patient with myocardial dysfunction and an abnormal electrocardiogram. The reported etiologies of infantile myocardial ischemia are abnormalities of coronary arteries, perinatal asphyxia, umbilical catheterization, and myocarditis. Generalized arterial calcification of infancy, although rare, should be considered in the differential diagnosis of infantile myocardial ischemia if coronary artery origin is found to be normal on echocardiography.