61 results
Abnormal Liver Function Tests - Differential Diagnosis Algorithm for Transaminitis
Hepatocellular Pattern (ALT or AST > ALP):
Abnormal Liver Function ... (ALT or AST > ALP ... Wilsons, Pregnancy - AFLP ... Cholestatic Pattern (ALP ... - CBD stone, Biliary
Liver Function Test (LFTs) Elevation
AST - Cardiac and skeletal muscle, kidney, brain
ALT - More specific for
Liver Function Test ... specific for the liver ... ALP - Biliary ... Transaminase, ALP ... SinaiBmoreIMRes #Liver
Acute Fatty Liver of Pregnancy (AFLP)
Pathophysiology:
 • Defect in fetal free fatty acid metabolism products →
Acute Fatty Liver ... of Pregnancy (AFLP ... infiltrates maternal hepatocytes ... → Liver dysfunction ... iMedEducation #AFLP
Alkaline Phosphatase (ALP) Elevation - Differential Diagnosis Algorithm

ALP:
 - Enzymes that catalyze hydrolysis of organic phosphate
- Increased ALP ... disturbance (obstructed liver ... Highest • Bone • Liver ... Drugs - Primary biliary ... PSC - Other biliary
Acute Liver Injury - Differential Diagnosis Algorithm

Vascular Causes of Acute Liver Injury: 
 • Hepatic vein:
Extrahepatic - Biliary ... Choledocholithiasis, Biliary ... - Obstruction: Biliary ... • AST/ALT > ALP ... disease - If ALP
Liver Chemistry Tests - AST, ALT, Alkaline Phosphatase and Bilirubin Metabolism
AST and ALT:
 • AST: liver
Liver Chemistry ... ALT: • AST: liver ... In liver, 80% of ... primarily within liver ... Synthesis: in hepatocyte
Elevated Liver Enzymes - Differential Diagnosis Algorithm
Severe ALT > 15x ULN
 • Viral
 • Drugs/Toxins
 •
Elevated Liver Enzymes ... • Pregnancy - AFLP ... Duct Stone • Biliary
Thrombocytopenia and Pregnancy - TTP/HUS, HELLP Syndrome and Acute Fatty Liver of Pregnancy (AFLP)
Three syndromes in
and Acute Fatty Liver ... of Pregnancy (AFLP ... Hemolysis, Elevated Liver ... exchange 3) Fatty liver ... TTPHUS #HELLP #AFLP
Liver Chemistries - Interpretation of LFTs

R-value: Serum (ALT/ULN ALT) / (Alk phos/ULN ALP)
 • R >
Liver Chemistries ... Identify Acute Liver ... Less specific to liver ... - Specific to liver ... - Assists in liver
Causes of Severe Acute Liver Injury
 - Ichemic hepatitis
 - Acute biliary obstruction
 - Drug-Induced liver
of Severe Acute Liver ... hepatitis - Acute biliary ... - Drug-Induced liver ... Hemochromatosis - Primary biliary