title: Trepopnea due to interatrial shunt following lung resection.
abstract: Dyspnea and platypnea following pneumonectomy have been reported as a result of right-to-left interatrial shunt. We report on a case of trepopnea with marked positional arterial oxygen desaturation following right middle and lower lobectomy. A similar mechanism was found, with right-to-left interatrial shunting occurring predominantly in the right lateral position. Surgical repair corrected the clinical and physiologic abnormalities.
authors.affiliation: Department of Medicine, Mount Sinai Hospital, and University of Toronto, Ontario, Canada.
authors.forename: S
authors.initials: S
authors.lastname: Alfaifi
authors.forename: S E
authors.initials: SE
authors.lastname: Lapinsky
mesh_terms: D004452:Echocardiography; D005260:Female; D006325:Heart Atria / Q000503:physiopathology; D006346:Heart Septum / Q000503:physiopathology; D006801:Humans; D000860:Hypoxia / Q000209:etiology; D008875:Middle Aged; D011013:Pneumonectomy / Q000009:adverse effects*; D011187:Posture; D012120:Respiration Disorders / Q000209:etiology* / Q000503:physiopathology