portocaval


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por·ta·ca·val

, portocaval (pōr'tă-kā'văl),
Concerning or relating to the portal vein and the inferior vena cava.

por·ta·ca·val

, portocaval (pōr'tă-kā'văl, pōrtŏ-kāvăl)
Concerning the portal vein and the inferior vena cava.

portocaval

see portacaval.

portacaval, portocaval

pertaining to or connecting the portal vein and caudal vena cava.

portacaval anastomosis
surgical, traumatic or congenital defect resulting in an anastomosis between the portal vein and the caudal vena cava including a portal-azygos anastomosis, or the portal vein and the hepatic artery resulting in portal hypertension. More commonly provides the physical basis for a portacaval shunt.
portacaval shunt
single or multiple abnormalities, intrahepatic or extrahepatic in location, result in venous blood from the intestine bypassing the liver. Hyperammonemia results and leads to neurological dysfunction (hepatic encephalopathy). Other clinical signs include weight loss or poor growth from an early age, vomiting, diarrhea, voracious appetite and polydipsia.
References in periodicals archive ?
9) Although parenchymal liver disease was excluded by biopsy results, a portocaval shunt was present in our patient, with drainage of the mesenteric blood into the inferior vena cava.
Hepatic cirrhosis causes considerable portocaval shunting, leading to increased drug concentrations (63); thus, lowering of the usual dose of TCAs is recommended for patients with significant hepatic dysfunction.