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  • Title: Chronic portal venous hypertension. The effect on liver blood flow and liver function and the development of esophageal varices.
    Author: Jensen LS, Krarup N, Larsen JA, Juhl C, Nielsen TH, Dybdahl H.
    Journal: Scand J Gastroenterol; 1987 May; 22(4):463-70. PubMed ID: 3299679.
    Abstract:
    Portal venous hypertension was induced in Göttingen minipigs by banding the portal vein. The pigs were checked repeatedly during the following 24 weeks. Portal pressure increased immediately on banding, from 8.4 +/- 0.7 mm Hg to 19.4 +/- 0.7 mm Hg, and remained constant throughout the observation period. Within 5 weeks all pigs developed esophageal varices, as demonstrated by portal angiography and endoscopy. The experimentally induced portal hypertension was accompanied by a 65% decrease in hepatic blood flow, most probably caused by almost complete shunting of portal venous blood. The hepatic arterial flow appeared to be within normal limits and sufficient to cover the oxygen demand of the liver; to judge from the splanchnic elimination rate of galactose, the hemodynamic changes did not affect the functional capacity of the liver.
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