title: Transcatheter treatment of atrial septal defect presenting with platypnea-orthodeoxia syndrome.
abstract: A 29-year-old woman was referred to our institute for symptomatic hypoxemia. Her dyspnea was aggravated while sitting or standing and relieved while in supine position. She did not have any pulmonary disease. Transthoracic echocardiography and heart computed tomography revealed an underestimated small atrial septal defect (ASD) with a left-to-right shunt. A cardiac catheterization was performed to evaluate pulmonary hypertension. It revealed a normal pulmonary artery pressure and a large ASD with bidirectional shunt during Valsalva maneuver by intracardiac echocardiogram. Her arterial oxygen saturation decreased from 93% while supine to 79% while at a 15° sitting position. Thus, the patient was diagnosed with platypnea-orthodeoxia syndrome. The ASD was successfully closed with Amplatzer® (St. Jude Medical) septal occluder and both platypnea and orthodeoxia were resolved immediately after the procedure.
authors: Division of Pediatirc Cardiology, Congenital Heart Disease Center, Severance Cardiovascular Hospital, Department of Pediatrics, Yonsei University College of Medicine, Seoul, Korea.
authors: Se Yong
authors: SY
authors: Jung
authors: Division of Pediatirc Cardiology, Congenital Heart Disease Center, Severance Cardiovascular Hospital, Department of Pediatrics, Yonsei University College of Medicine, Seoul, Korea.
authors: Nam Kyun
authors: NK
authors: Kim
authors: Department of Pediatrics, Gangnam Severance Hospital, Yonsei University College of Medicine, Seoul, Korea.
authors: Lucy Youngmin
authors: LY
authors: Eun
authors: Division of Pediatirc Cardiology, Congenital Heart Disease Center, Severance Cardiovascular Hospital, Department of Pediatrics, Yonsei University College of Medicine, Seoul, Korea.
authors: Jo Won
authors: JW
authors: Jung
authors: Division of Pediatirc Cardiology, Congenital Heart Disease Center, Severance Cardiovascular Hospital, Department of Pediatrics, Yonsei University College of Medicine, Seoul, Korea.
authors: Jae Young
authors: JY
authors: Choi
keywords: Amplatzer Septal Occluder; Atrial septal defect; Platypnea-orthodeoxia syndromes