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An unusual case of orthodeoxia
M Zuabair Khan1, Vincent Figueredo2, Nisha Gandhi2
1Department of Internal Medicine, St Mary Medical Center, Langhorne, USA.
Abstract:
Progressive hypoxia in hospitalized patients can be due to many etiologies, especially in patients with multiple comorbidities. More unusual causes of hypoxia, such as patent foramen ovale (PFO) with a right to left shunting in the absence of elevated right atrial pressures, should be considered when workup does not reveal a specific etiology. <Learning objectives: Hypoxemia due to a right-to-left atrial shunt with normal pulmonary arterial pressures can be seen in the aortic aneurysm patients.>.
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