title: Secundum atrial septal defect.
authors.affiliation: Department of Cardiology, QEQM Hospital Margate, Kent, United Kingdom.
authors.forename: Waqas
authors.initials: W
authors.lastname: Ullah
authors.forename: Qaiser
authors.initials: Q
authors.lastname: Zeb
authors.forename: Richard
authors.initials: R
authors.lastname: Heppell
mesh_terms: D004417:Dyspnea / Q000209:etiology; D017548:Echocardiography, Transesophageal; D005260:Female; D006344:Heart Septal Defects, Atrial / Q000150:complications / Q000000981:diagnostic imaging*; D006346:Heart Septum / Q000000981:diagnostic imaging; D006801:Humans; D008875:Middle Aged