What is sinistral hypertension?
Sinistral portal hypertension occurs when a pathological process causes occlusion of the splenic vein. The resultant elevated splenic bed venous pressure causes formation of gastric varices which can lead to hematemesis as a common presentation for this disease process.
What is left-sided hypertension?
Left-sided portal hypertension (LSPH), also known as segmental, regional, localized, compartmental, lineal, splenoportal, or sinistral hypertension is a rare, but life threatening cause of upper gastrointestinal bleeding. It usually occurs as a result of isolated obstruction of the splenic vein.
What is segmental portal hypertension?
Sinistral portal hypertension (SPH), also known as left-sided portal hypertension or segmental portal hypertension, is a rare cause of upper gastrointestinal hemorrhage. The main feature of SPH is gastric variceal hemorrhage due to splenic vein thrombosis or occlusion [1,2,3,4].
How does splenomegaly cause portal hypertension?
Liver disease such as cirrhosis, or liver scarring, can cause the blockage of blood flow through the liver, thus causing blood to back up in the portal vein resulting in increased pressure or portal hypertension. As a result, the spleen becomes engorged with blood, leading to splenomegaly.
Does pancreatitis cause portal hypertension?
Because of a close anatomical relationship to the splenic vein chronic pancreatitis can cause obstruction to the splenic outflow. Regional portal hypertension develops and collateral flow sometimes gives rise to gastric and oesophageal varices which can cause life-threatening bleeding.
Is portal hypertension serious?
These veins become enlarged and twisted. They swell up and may burst (rupture) under the added pressure. Treatment is needed to prevent them from bursting and bleeding. If bleeding occurs, it can be fatal.
Why does splenomegaly occur in portal hypertension?
What are the risk factors for portal hypertension?
Risk factors. People at an increased risk for cirrhosis are at an increased risk for portal hypertension. If you have a long history of alcohol abuse, you face a higher risk of cirrhosis. You’re at a higher risk of hepatitis if any of the following apply to you: You use needles to inject drugs.
Is hypertension and portal hypertension the same?
Portal hypertension is a leading side effect of cirrhosis . Your body carries blood to your liver through a major blood vessel called the portal vein. Cirrhosis slows your blood flow and puts stress on the portal vein. This causes high blood pressure known as portal hypertension.
How to measure portal hypertension?
Measurement of the degree of portal hypertension is usually performed by measuring the hepatic venous pressure gradient (HVPG) which is the difference between the free hepatic venous pressure (FHVP) and the wedged hepatic venous pressure (WHPG). The HVPG accurately reflects the degree of PH in the majority of liver diseases.
What is hepatic portal hypertension?
Jump to navigation Jump to search. Portal hypertension is hypertension (high blood pressure) in the hepatic portal system – made up of the portal vein and its branches, that drain from most of the intestine to the liver. Portal hypertension is defined as a hepatic venous pressure gradient.