How did liver cirrhosis and portal vein high pressure take shape? 's general knowledge

How did liver cirrhosis and portal vein high pressure take shape? 's general knowledge
At nodular liver cirrhosis, the high pressure of portal vein is mainly the sinus. The reason produced is: (1)Hepatocyte necrosis changes the sex, can't form the little leaf of normal liver and form and regenerate tubercle, regenerated tubercle oppression his portal vein and vena cava genus around prop up, make the blood vessel narrow and cutting off or stopping up, the liver vein flows out a blockage after depositing and sinus happened when the portal vein belonged to a piece of blood and flowed into the liver blood sinus, form the pulse pressure of the door and increase gradually. (2)Liver central necrosis and fiber of small leaf, make the central intravenous tube wall increase thick and stopping up, so that the door pulse pressure increases. (3)Liver artery branch and portal vein belong to a communication identically, form the arteriovenous shunt, make the intersection of liver and arterial blood flow directly the ABC of intravenous genus prop up, can make raised the intersection of portal vein and pressure rise further because of blocking already. (4)The hyperplasia connection of connective tissue in the little leaf of liver, form the small false leaf, cause the look-ahead structure among the little branch of the portal vein, liver little intravenous branch, little branch of liver artery to be destroyed, the blood vessel is pressed. Can also continue and take place thrombosis in little branch of the portal vein, the short circuit takes place in the blood vessel, make the blood of portal vein enter liver intravenously without the small leaf of liver, the hepatocyte can not get enough nutrition, can cause the condition to worsen.
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