Portosystemic anastomosis: Anatomy, clinical significance
Jul 26, 2023 · Porto-systemic anastomosis also known as portocaval anastomosis is the collateral communication between the portal and the systemic venous system. The portal venous system transmits deoxygenated blood from most of the gastrointestinal tract and gastrointestinal organs to the liver.
Portal-Systemic Encephalopathy - StatPearls - NCBI Bookshelf
Jul 31, 2023 · Portosystemic or hepatic encephalopathy is defined as a neuropsychiatric syndrome due to a portosystemic shunt. The causative factor is increased ammonia levels in the blood. Treatment involves primary and secondary prophylaxis and liver transplant.
Portosystemic collateral pathways | Radiology Reference Article ...
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. This facilitates shunting of blood away from the liver into the systemic venous system in portal hypertension, as a means for reducing ...
Portacaval anastomosis - Wikipedia
A portacaval anastomosis or portocaval anastomosis is a specific type of circulatory anastomosis that occurs between the veins of the portal circulation and the vena cava, thus forming one of the principal types of portasystemic anastomosis or portosystemic anastomosis, as it connects the portal circulation to the systemic circulation ...
Portosystemic Encephalopathy - Portosystemic Encephalopathy …
Portosystemic encephalopathy is a neuropsychiatric syndrome that occurs when portosystemic shunting allows absorbed products that are normally detoxified by the liver to reach the brain. Manifestations include cognitive and behavioral dysfunction (eg, confusion, obtundation, coma) and neuromuscular dysfunction (eg, flapping tremor, ataxia ...
Congenital portosystemic shunt - Wikipedia
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.
Congenital portosystemic shunts: diagnosis and treatment
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.
Portosystemic shunts and refractory hepatic encephalopathy: …
Portosystemic shunt (PS) syndrome encompasses a spectrum of disease manifestations ranging from asymptomatic portal hypertension to recurrent and refractory hepatic encephalopathy, ultimately culminating in progressive hepatic failure in patients of cirrhosis and associated large PSs.
Congenital portosystemic shunt | Radiology Reference Article ...
Jul 31, 2022 · Congenital portosystemic shunts are rare, extrahepatic or intrahepatic, anatomical abnormalities shunting blood from the portal venous system to the systemic venous system and, thus, avoiding passage through the hepatic acinus.
Portal hypertension: Imaging of portosystemic collateral …
The portosystemic collateral channels that can develop in portal hypertension are numerous, widespread and varied in appearance. Intrathoracic manifestations of portosystemic collateral vessels characteristically develop by way of the coronary vein into esophageal or paraesophageal (22%-38%) varices and cardiophrenic varices (18%)[ 10 , 18 , 19 ].
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