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DVT423-AF4

USIDMS Hepatoportal System

QuestionAnswer
What are the two sources of liver blood supply? Hepatic Artery and Portal Vein
What are limitations to a successful exam? Patient obesity, diffuse liver disease, ascites, and bowel gas
What should the portal vein measure during quiet respiration? Less than or equal to 13 mm
What kind of waveforms do hepatic veins usually exhibit? Pulsatile, triphasic with both antegrade and retrograde flow
What is the hepatic buffer response? When portal blood flow increases, hepatic arterial blood flow decreases and vice versa.
How is portal hypertension defined? An abnormal increase in portal venous pressure as a result of obstruction of blood flow through the liver
What is the most common collateral shunt? The coronary-gastroesophageal route
What is Budd-Chiari Syndrome? Obstruction of the hepatic venous outflow tract due to a thrombus or tumor.
If portal venous thrombosis persists for 12 months without substantial lysis, what can occur? The development of periportal collateral veins called cavernous transformation.
What can be used to decrease the pressure in the portal venous system? Transjugular Intrahepatic Portosystemic Shunts
Created by: arfair1