What is Mesocaval shunt?
Mesocaval shunts are stent grafts placed by interventional radiologists between the mesenteric system, most often the superior mesenteric vein, and the inferior vena cava. This allows flow to bypass the congested hepatic system, reducing portal pressures.
What is portosystemic shunting?
A portosystemic shunt (PSS) is an abnormal connection between the portal vascular system and systemic circulation. This means that a portion of the toxins, proteins and nutrients absorbed by the intestines bypass the liver and are shunted directly into the systemic circulation.
What is a mesenteric caval shunt?
Mesocaval shunt is an anastomosis between the superior end of the divided IVC and the side of the superior mesenteric vein. In principle, it is hemodynamically similar to the side-to-side PCS. In patients with extrahepatic PH due to occlusion of the PV, this type of shunt is very effective.
What is Gastrocaval shunt?
ANATOMIC CLASSIFICATION SYSTEM FOR VARICES The second most common pathway is through a direct gastrocaval shunt where the gastric varices drain through the inferior phrenic vein or pericardiophrenic vein directly into the inferior vena cava (IVC).
What side is Portacaval shunt on?
A side-to-side portacaval shunt is preferred when attempting to control refractory ascites. If an end-to-side portacaval shunt is desired, this is done by dividing the portal vein and in as close proximity to the liver hilum as possible.
What causes portosystemic shunt?
In the majority of cases, a liver shunt is caused by a birth defect called a congenital portosystemic shunt. In some cases, multiple small shunts form because of severe liver disease such as cirrhosis. These are referred to as acquired portosystemic shunts.
What is a spontaneous Splenorenal shunt?
Spontaneous splenorenal shunts (SSRSs) are a common type of portosystemic shunt (occurring in an estimated 14% to 60% of patients with cirrhosis) that decompress the portal circulation through the left renal vein and inferior vena cava (Fig.
Where is TIPS placed?
Transjugular intrahepatic portosystemic shunt or (TIPS) is a shunt (tube) placed between the portal vein which carries blood from the intestines and intraabdominal organs to the liver and the hepatic vein which carries blood from the liver back to the vena cava and the heart.
