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Query: UMLS:C0242706 (hyperoxia)
 5,219 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Concentration of 2,3-DPC was decreased in erythrocytes and the plasma erythropoietic activity was reduced in rats in hyperoxia as well as in rats with the post-transfusional and posthypoxic polycythemia. The data obtained suggest changes of both the oxygen transport properties of the blood and the erythropoiesis in order to limit the oxygen supply of tissues under conditions of excessive oxygen in the organism.
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PMID:[Oxygen transport properties of blood in the presence of excess oxygen in the body]. 362 45

The case of a right-to-left shunt-induced hypoxemia with an abnormal return of the inferior vena cava (AIVCR) into the left atrium (LA) is reported in a 30-year-old male with cyanosis and polycythemia. The chest X ray and the lung CT scan was normal. Spirometry was normal but the transfert-CO coefficient (KCO) was lowered. Hypoxemia was observed at rest and worsening during exercise. The alveolo-arterial oxygen tension difference under hyperoxia was increased (56 kPa). Contrast echocardiography (CEch) suggested the presence of an AIVCR with a right-to-left shunt only observed by the inferior route. The inferior vena cava (IVC) angiography and the magnetic resonance imaging demonstrated an AIVCR characterized by a direct drainage of IVC in the left atrium. The good tolerance can be explained by the association of AIVCR with an inter-auricular septal defect resulting in a left-to-right shunt which partially corrected the right-to-left shunt. After surgical treatment, arterial blood gases normalized, KCO remained low and CEch became negative.
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PMID:[Hypoxemia secondary to inferior vena cava return into left atrium]. 1192 87