surgery for portal hypertension Flashcards
tributaries of the portal vein
left gastir
posterior superior pancreaticoduodenal V
major bv that supplies blood to the liver
portal vein
dual blood supply of the liver comes from
portal vein and hepatic artery
volume of portal venous flow is indirectly regulated by
vasoconstriction and vasodilation of the splanchnic arterial bed
hepatic arterioles respond to
circulating catecholamines and sympa nervous stimulation
distinctions of portal hypertension
cobblestone appearance of liver
portal V and tributaries are dilated
main surgical concern in hyperension
dev of varices in the collaterals of esophagus
complications of portal hypertension
dev of esophageal varices arteriovenous shunting and/or mechanical obstruction caput meudsae marked ascites (end stage liver dse) hyperspleenism
most common extrahepatic obstructive disease
portal vein thrombosis
prehepatic obstructive diseases
pv thrombosis
trauma
compression by intrisic causes (cyst or tumors)
post hepatic obstructive disease
CHF
hepatic vein thrombosis or obstruction
most common location of portal hypertension
intrahepatic
most common cause of intrahepatic presinusoidal hypertension
schistosomiasis
most common intrahepatic portal H
sinusoidal obstruction
