Atrial septal defect in the middle-aged and elderly.
D000328:Adult; D000368:Aged; D006328:Cardiac Catheterization; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006344:Heart Septal Defects, Atrial; D006801:Humans; D008297:Male; D008875:Middle Aged; D011379:Prognosis