Liver Flashcards
Brings blood from intestines
Portal vein
Blood flow from portal vein and hepatic artery flow into
Low pressure sinusoids
AST and ALT test for
Hepatocyte integrity
Serum bilirubin, alkaline phosphatase, and gamma-glutamic transpeptidase test for
Biliary excretion
Serum albumin and coagulation factors test for
Hepatocyte synthetic fn
Involved in AA metabolism
AST and ALT
Removes phosphate groups. Seen in liver, bone, and intestine as different isozymes. Found in bile duct and liver cells. Elevated in cholestatic d/o
Alkaline phosphatase (ALP)
Involved in glutathione metabolism and drug detox
Gamma-glutamyl transpeptidase
GGT and ALP elevated together indicate
Hepatobiliary disease
Most sensitive enzyme indicator of liver disease
GGT
Most common cause of acute hepatitis
Viral
Acute encephalopathy, coagulopathy, acute renal failure, GI bleeding, infection, sepsis, respiratory failure, cardiovascular collapse
Acute hepatitis severe cases
Results from inadequate liver fn due to either diminished # of hepatocytes OR impaired fn
Acute hepatic failure
Usually results from chronic liver disease with yrs of progressive injury
Acute hepatic failure
Liver disease of short duration (within 26 wks of initial liver injury) w/o pre-existing disease
Acute hepatic failure
Acute massive hepatic necrosis usually
Acute hepatic failure
Reye’s syndrome, acute fatty liver of pregnancy, and tetracycline toxicity
Non-necrotic liver failure
Jaundice, N/V
Acute hepatic failure
Due to retention of bilirubin
Jaundice
Caused by high ammonia levels. Have behavioral abnormalities, rigidity,, hyperreflexia(asterixis), and EEG changes.
Hepatic encephalopathy
Decreased production of clotting factors
Bleeding diathesis
Thrombocytopenia in acute hepatic failure caused by
Hypersplenism and marrow suppression
DIC in acute hepatic failure because liver
Fails to clear activated factors from circulation
Fatty liver of pregnancy and toxic reaction to tetracycline/valproate show
Microvesicular steatosis
^^^^ AST and ALT, hypoalbuminemia, hyperammonemia
Acute hepatic failure
Function renal failure w/o intrinsic morphological abnormalities. Renal fn normalizes with return of liver fn
Hepatorenal syndrome.
Systemic vasodilation > compensatory renal vasoconstriction > decreased GFR
Hepatorenal syndrome
Blood drainage via _______ veins > IVC
Hepatic