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Posthepatic jaundice (obstructive jaundice) is caused by a blockage of bile ducts that transport bile containing conjugated bilirubin out of the liver for excretion. [29] This is a list of conditions that can cause posthepatic jaundice: Choledocholithiasis (common bile duct gallstones). It is the most common cause of obstructive jaundice.
[3] [4] The degree of yellowish staining of the conjunctiva and skin in jaundice is proportional to hyperbilirubinemia to some extent. [6] Vital signs, such as fever, tachycardia and hypotension, suggest hyperbilirubinemia induced by viral hepatitis. [4] Abdominal pain could indicate biliary tract obstruction and cirrhosis. [4]
This causes an accumulation of bilirubin in the blood (hyperbilirubinemia), leading to the symptoms of jaundice. [ citation needed ] If the neonatal jaundice is not resolved with simple phototherapy , other causes such as biliary atresia , Progressive familial intrahepatic cholestasis , bile duct paucity, Alagille syndrome , alpha 1-antitrypsin ...
Jaundice of the skin or eyes is an important physical finding in biliary obstruction. Jaundice and/or clay-colored stool may raise suspicion of choledocholithiasis or even gallstone pancreatitis. [1] If the above symptoms coincide with fever and chills, the diagnosis of ascending cholangitis may also be considered.
These mechanisms are responsible for the dark urine and pale stools observed in biliary obstruction. Low urine urobilinogen may result from complete obstructive jaundice or treatment with broad-spectrum antibiotics , which destroy the intestinal bacterial flora (obstruction of bilirubin passage into the gut or failure of urobilinogen production ...
Mirizzi's syndrome is a rare complication in which a gallstone becomes impacted in the cystic duct or neck of the gallbladder causing compression of the common hepatic duct, resulting in obstruction and jaundice. The obstructive jaundice can be caused by direct extrinsic compression by the stone or from fibrosis caused by chronic cholecystitis ...
Unconjugated bilirubin is not water-soluble and so is not excreted in the urine. Testing urine for both bilirubin and urobilinogen can help differentiate obstructive liver disease from other causes of jaundice. [61] As with billirubin, under normal circumstances, only a very small amount of urobilinogen is excreted in the urine. If the liver's ...
In jaundice owing to hemolysis (prehepatic, or hemolytic, jaundice), the pathophysiology is that overproduction of bilirubin from the extravascular or intravascular hemolysis overwhelms the capacity of the liver to excrete it. [3]