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Hepato-pulmonary syndrome (HPS) is an uncommon complication of liver disease. It can be acute or chronic and occur with or without portal hypertension. The reported frequency of HPS in patients with liver disease ranges between 4% and 32%. It occurs as a result of vasodilatation of the pulmonary vasculature which is most likely to be mediated by nitric oxide (NO). Three components are essential to...
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