Biliary tract obstruction is generally manifested as digestive tract symptoms. The main manifestations of patients are loss of appetite, nausea and vomiting, yellow staining of skin and sclera, severe itching of skin, complete obstruction, pale stool and clay color. Bile cannot be discharged normally due to biliary obstruction. However, bile salts in biliary tract remain and accumulate in hepatocytes, which affects cholesterol decomposition and eventually increases blood cholesterol.
Extended data:
Biliary obstruction is a disease with high mortality in surgical acute abdomen, most of which are secondary to bile duct stones and biliary ascariasis. However, bile duct strictures and bile duct tumors can sometimes be secondary to this disease. These diseases cause bile duct obstruction, cholestasis and secondary bacterial infection. Almost all pathogenic bacteria come from the intestine and enter the biliary tract retrograde through the channel of Vater's ampulla or biliary-intestinal anastomosis. Bacteria can also enter the biliary tract through blood or lymphatic channels. The main pathogens are Escherichia coli, Klebsiella, Streptococcus faecalis and some anaerobic bacteria.
Baidu encyclopedia-biliary obstruction