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Chapter 24. Liver & Portal Venous System

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All of the following are true about the blood supply to the liver, except

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A. The portal vein is formed by the confluence of the splenic and superior mesenteric veins at the level of the second lumbar vertebra behind the head of the pancreas.

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B. The common hepatic artery arises from the celiac axis, ascends in the hepatoduodenal ligament, and gives rise to the right gastric, gastroduodenal, and proper hepatic arteries.

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C. In the hepatoduodenal ligament, the portal vein lies dorsal and slightly medial to the common bile duct.

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D. A replaced right hepatic artery typically arises from the inferior mesenteric artery and courses posteriorly and to the right of the common bile duct within the porta hepatis.

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E. A replaced left hepatic artery typically arises from the left gastric artery.

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D. A replaced right hepatic artery typically arises from the inferior mesenteric artery and courses posteriorly and to the right of the common bile duct within the porta hepatis

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The Child–Pugh classification of functional status in liver disease does not include

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A. Prothrombin time

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B. Serum albumin

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C. Encephalopathy

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D. Serum sodium

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E. Serum bilirubin

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D. Serum sodium

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Blunt trauma to the liver

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A. Requires operative management in 85% of patients

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B. With a laceration 4-cm deep but not affecting the major vasculature is a Grade III lesion

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C. Is involved in approximately 20% of all trauma admissions

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D. Is more common in the left liver than the right

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E. Is best evaluated acutely by MRI to define the ductal anatomy

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B. With a laceration 4-cm deep but not affecting the major vasculature is a Grade III lesion

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Portal hypertension

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A. In the United States, is most often caused by cirrhosis

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B. Is defined as a hepatic venous pressure gradient (the difference between portal-vein pressure and hepatic-vein pressure) greater than 25 mm Hg

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C. Is caused by Budd-Chiari syndrome in about 25% of cases in the United ...

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