نتایج جستجو برای: left to right shunts
تعداد نتایج: 10722382 فیلتر نتایج به سال:
Pulmonary arteriovenous fistulas (PAVFs) are rare vascular malformations (PAVMs) of the lung that could lead to severe hypoxiemia due to right-to-left intrapulmonary shunts. They may occur as isolated entities or associated with Osler-Rendu-Weber syndrome or hereditary haemorrhagic telangiectasia (HHT). We study 3 patients with Rendu-OslerWeber disease and a large arteriovenous malformation inv...
Parachute abnormality of mitral valve frequently occurs with left sided obstructive lesions though occasionally may occur as an isolated lesion. Symptoms depend upon the severity of stenosis and associated lesions. Parachute abnormality of the tricuspid valve has rarely been reported and its association with left to right shunts has not been described so far.
A method for the detection and quantification of left-to-right intracardiac shunts is described which utilizes a single breath inhalation of oxygen-15 labeled carbon dioxide (C15O2). The inhaled gas rapidly crosses the alveolar membrane and the oxygen-15 label is exchanged through the carbonate cycle to form oxygen-15 labeled water within the pulmonary capillary blood. Pulmonary indicator clear...
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