Spontaneous closure of an atrial septal defect.
D000790:Angiocardiography; D002675:Child, Preschool; D002932:Cineangiography; D004562:Electrocardiography; D006333:Heart Failure / Q000150:complications; D006345:Heart Septal Defects, Ventricular; D006439:Hemodynamics; D006801:Humans; D008297:Male; D009205:Myocarditis / Q000150:complications