title: Atrial septal defect of secundum type in the middle-aged. Clinical results of surgery and correlations between symptoms and hemodynamics.
mesh_terms: D000328:Adult; D001145:Arrhythmias, Cardiac / Q000209:etiology; D002675:Child, Preschool; D006344:Heart Septal Defects, Atrial / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery; D006439:Hemodynamics; D006760:Hospitalization; D006801:Humans; D007223:Infant; D008875:Middle Aged; D011183:Postoperative Complications; D011379:Prognosis