Portosystemic shunt
| Classification according to ICD-10 | |
|---|---|
| Z95.8 | Presence of other cardiac or vascular implants or grafts |
| ICD-10 online (WHO version 2019) | |
The portosystemic shunt , or PSS for short, is a vascular connection ( shunt ) between the portal vein system , which collects blood from the intestine, stomach and spleen and supplies it to the liver, and the inferior vena cava (lower vena cava).
Therapeutically, it is used to reduce portal hypertension in liver cirrhosis in order to avoid fatal esophageal variceal bleeding. The disadvantage is that blood bypasses the liver and is not detoxified. This can lead to portal or hepatic encephalopathy .
Types that were surgically created: portocaval anastomosis, splenorenal anastomosis, distal splenorenal shunt ( Warren shunt ). Nowadays, specialized radiologists can also apply a portocaval shunt in a minimally invasive way .
Sometimes the term portosystemic shunt is also used to indicate the existence of a spontaneously developing bypass circuit via the portocaval anastomoses ( esophageal varices , umbilical veins, hemorrhoids ), which in no way leads to an adequate reduction in portal pressure.
PSS in veterinary medicine
In veterinary medicine , hereditary portosystemic shunts have been described in dogs and cats , although the inheritance may vary depending on the breed. Basically, the extrahepatic shunts inherited polygenic , the intrahepatic shunt whereas simple autosomal - recessive are. Extrahepatic shunts have mainly been described in small dogs, terriers and British Shorthair cats; intrahepatic shunts especially in large breeds of dogs.
Individual evidence
- ↑ Alphabetical directory for the ICD-10-WHO version 2019, volume 3. German Institute for Medical Documentation and Information (DIMDI), Cologne, 2019, p. 965
- ^ Genetic welfare problems of companion animals - Portosystemic Shunt
- ↑ Laboklin
