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A portosystemic shunt or portasystemic shunt (medical subject heading term; PSS), also known as a liver shunt, is a bypass of the liver by the body's circulatory system. It can be either a congenital (present at birth) or acquired condition and occurs in humans as well as in other species of animals.
A portosystemic shunt (PSS) is an abnormal connection between the portal vascular system and systemic circulation. Blood from the abdominal organs, which should be drained by the portal vein into the liver, is instead shunted to the systemic circulation by the PSS or shunting vessel.
Apr 27, 2023 · Portosystemic collateral pathways , also called spontaneous portosystemic shunts or varices, develop spontaneously via dilatation of pre-existing anastomoses between the portal and systemic venous systems.
Jul 24, 2023 · Transjugular intrahepatic portosystemic shunt (TIPS) is a well-established percutaneous modality for decreasing portal hypertension. The major clinical indications for transjugular intrahepatic portosystemic shunts include refractory variceal hemorrhage and refractory ascites.
Congenital portosystemic shunts (CPSS) are rare vascular malformations that create an abnormal connection between portal and systemic veins resulting in complete or partial diversion of the portal flow away from the liver to the systemic venous system.
Apr 4, 2020 · Spontaneous porto-systemic shunts (SPSS) are frequent in liver cirrhosis and their prevalence increases as liver function deteriorates, probably as a consequence of worsening portal hypertension, but without achieving an effective protection against cirrhosis' complications.
Sep 29, 2020 · Spontaneous portosystemic shunts (SPSSs) are communications among the venous portal system and the venous systemic circulation that bypass the liver. 1 Their presence has been related to portal hypertension (PH). 2 However, many questions regarding their prevalence, pathophysiology and repercussion in liver disease have not been completely eluci...
Mar 30, 2023 · A transjugular intrahepatic portosystemic shunt (TIPS) is a minimally invasive procedure for treating portal vein hypertension and other complications of liver disease. A surgeon inserts...
Portosystemic encephalopathy is a neuropsychiatric syndrome that can develop in patients with liver disease. It most often results from high gut protein or acute metabolic stress (eg, gastrointestinal bleeding, infection, electrolyte abnormality) in a patient with portosystemic shunting.
Dec 18, 2023 · Placement of a transjugular intrahepatic portosystemic shunt (TIPS) reduces elevated portal pressure by creating a low-resistance channel between the hepatic vein and an intrahepatic branch of the portal vein using angiographic techniques ( figure 1 ).
