Atrial septal defect.
D000792:Angiography; D002648:Child; D004452:Echocardiography / Q000379:methods; D004541:Eisenmenger Complex / Q000209:etiology; D006322:Heart Aneurysm / Q000175:diagnosis; D006344:Heart Septal Defects, Atrial / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging; D006801:Humans; D006976:Hypertension, Pulmonary / Q000209:etiology; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000209:etiology; D008945:Mitral Valve Prolapse / Q000209:etiology; D011877:Radionuclide Imaging