title: Q-1 interval of the phonocardiogram in patients with atrial septal defect.
mesh_terms: D000293:Adolescent; D000328:Adult; D001775:Blood Circulation; D001794:Blood Pressure; D006328:Cardiac Catheterization; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000503:physiopathology*; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D010701:Phonocardiography; D011652:Pulmonary Circulation