Changes of the first heart sound in atrial septal defect.
D000293:Adolescent; D000328:Adult; D002648:Child; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000503:physiopathology*; D006439:Hemodynamics; D006801:Humans; D008297:Male; D010701:Phonocardiography