title: Reversible orthodeoxia.
authors.forename: T O
authors.initials: TO
authors.lastname: Cheng
mesh_terms: D006344:Heart Septal Defects, Atrial / Q000517:prevention & control*; D006801:Humans; D000860:Hypoxia / Q000209:etiology*; D010490:Pericardial Effusion / Q000150:complications*; D011187:Posture; D014682:Vena Cava, Inferior / Q000002:abnormalities