title: Right-to-left interatrial shunt despite normal pulmonary artery pressure. Anatomical implications.
abstract: Platypnea-orthodeoxia is a rare syndrome characterized by dyspnea induced by the upright position and relieved by supine position and an arterial deoxygenation increased by the upright position which improves during recumbency. In many cases, this syndrome has been associated with patent foramen ovale and right-to-left shunt. Several anatomical factors that can alter the atrial anatomy and facilitate shunting through an interatrial communication have been related with this syndrome. We present a case in which an enlarged aortic root was the main anatomical factor that contributed to transient right-to-left shunting induced by postural changes.
authors.forename: Carlos J
authors.initials: CJ
authors.lastname: Soriano
authors.forename: Jose R
authors.initials: JR
authors.lastname: Balaguer
authors.forename: Amparo
authors.initials: A
authors.lastname: Lluch
authors.forename: Jose L
authors.initials: JL
authors.lastname: Pérez-Boscá
authors.forename: Francisco
authors.initials: F
authors.lastname: Pomar
authors.forename: Jorge
authors.initials: J
authors.lastname: Sanchez
authors.forename: Rafael
authors.initials: R
authors.lastname: Paya
mesh_terms: D000368:Aged; D001021:Aortic Valve / Q000473:pathology*; D001794:Blood Pressure; D004108:Dilatation, Pathologic; D005260:Female; D006343:Heart Septal Defects / Q000209:etiology*; D006801:Humans; D011651:Pulmonary Artery