Portal venous thrombosis was originally considered to be a contraindication for liver transplantation. Currently, several methods exist to re-establish blood flow to the hepatic portal system. Cavoportal hemitransposition is a surgical procedure that can be used in liver transplantation when the portal venous system is thrombosed and portal flow cannot be re-established from the mesenteric veno...

The hepatic arterial and hepatic portal venous vascular beds of the chloralose-urethane anesthetized dog were perfused simultaneously in situ. Vasopressin (10 mU = 1 unit) was injected in graded increasing doses into the hepatic artery and into the portal vein. Both intra-arterial and intraportal vasopressin elicited both hepatic arterial vasoconstriction and hepatic venous dilation; the delay ...

1. The effects of the subcutaneous administration of a long-acting somatostatin analogue (octreotide) or of placebo on the splanchnic blood flow response to a mixed solid meal has been examined in eight normal subjects by using a transcutaneous Doppler ultrasound technique. Each subject was studied on two occasions more than 1 week apart. 2. On the control day, feeding had a pronounced effect o...

Introduction: Mesenteric blood flow increases markedly in response to the presence of food in the gut, with portal blood flow increasing up to 100% or more postprandially, compared with the fasting state (1). If the impedance to portal outflow remained constant, the increased flow would result in an increase in portal venous pressure. Yet, in normal humans, the portal venous pressure remains st...

conclusion the involved liver with hht typically shows vascular shunting and biliary diseases. also, arteriovenous shunts may be vulnerable to biliary diseases. results (i) three types of shunting were found in the livers, including arteriovenous (hepatic artery to hepatic vein) in 6 cases, arterioportal (hepatic artery to portal vein) in 2 cases, and portal venous (portal vein to hepatic vein)...

AIMS To evaluate the accuracy of measurement of hepatic venous pressure gradient by catheter wedge as compared to balloon wedge (the gold standard). MATERIALS AND METHODS Forty-five patients having a clinical diagnosis of intrahepatic portal hypertension were subjected to the two different types of pressure measurements (catheter wedge and balloon wedge) during transjugular liver biopsy under...

In liver cirrhosis, variceal bleeding is the last in a chain of events initiated by the increase in portal pressure (estimated in clinical practice by the hepatic venous pressure gradient). When hepatic venous pressure gradient goes above 10 mmHg the patient is at risk of developing varices, and when hepatic venous pressure gradient reaches 12 mmHg variceal bleeding might develop. Currently, th...

BACKGROUND Liver resection remains the mainstay of curative treatment for liver malignancies. A variety of preoperative assessments and surgical techniques have improved the short- and long-term outcomes of liver resection in patients with liver tumors. Recently, laparoscopic hepatectomies have been increasingly performed. The aim of the present study is to survey the current practice of liver ...

Background Hepatic venous pressure gradient (HVPG) reflects the portal pressure in patients with cirrhotic portal hypertension. The aim of the study was to assess the relation of HVPG to variceal size, Child-Pugh status, and variceal bleeding. Materials and methods A total of 96 patients with cirrhosis of liver were enrolled prospectively and each patient's HVPG level was measured via the tra...

The anhepatic phase of an orthotopic: liver transplantation procedure occun when the surgeon has removed the native liver (along with the intrahepatic: portion of the vena cava) and is involved in sewing in the donor organ. During this interval. the inferior vena cava is c:ross-clamped at the diaphragm and at a point just above the entry of the renal veins. The result is a complete interruption...