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By creating a shunt from the portal vein to the hepatic vein, this intervention allows portal blood an alternative avenue for draining into systemic circulation. In bypassing the flow-resistant liver, the net result is a reduced pressure drop across the liver and a decreased portal venous pressure. Decreased portal venous pressure in turn ...
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.
Compared to portacaval shunting, TIPS is less invasive, safer, and is now the preferred option for patients with advanced liver failure or those at high surgical risk. [11] Both TIPS and portacaval shunting effectively reduce portal pressure but share the risk of hepatic encephalopathy (HE) due to bypassing the liver's detoxification process.
Portal hypertension is a condition in which the blood pressure of the portal venous system is too high. It is often the result of cirrhosis of the liver. Liver cirrhosis can lead to increased intrahepatic vascular resistance and vasodilation of portal system arteries, both of which increase pressure in the portal vein. [ 4 ]
A transjugular intrahepatic portosystemic shunt (TIPS) involves the decompression of the high pressures in the portal circulation by placing a small stent between a portal and hepatic vein. This is done through radiologically guided catheters which are passed into the hepatic vein either through the internal jugular vein or the femoral vein ...
A portacaval shunt (portal caval shunt) is a treatment for high blood pressure in the liver. A transjugular intrahepatic portosystemic shunt (TIPS) is an artificial channel within the liver that establishes communication between the inflow portal vein and the outflow hepatic vein. It is used to treat portal hypertension.
The main treatment in those with refractory hepatic hydrothorax is the insertion of a transjugular intrahepatic portosystemic shunt (TIPS). TIPS decompresses the portal system, reducing portal venous pressure and fluid in the abdomen; it is estimated to work in 70-80% of cases.
Transjugular intrahepatic portosystemic shunt procedures, or TIPS involve decompressing the portal vein by shunting a portal venule to a lower pressure systemic venule, under guidance with fluoroscopy. Since it treats the root cause of portal hypertension gastropathy, it has been putatively used for the condition.