732 results
Liver Enzymes (LFTs) - Causes of Hepatocellular and Cholestatic Liver Injury
Hepatocellular Liver Injury
 • AST/ALT elevation
Injury • AST/ALT ... > Alk phos • ALT ... • R value = (ALT ... + ULN ALT) / (alkaline ... #differential #hepatology
Liver Function Test (LFTs) Elevation
AST - Cardiac and skeletal muscle, kidney, brain
ALT - More specific for
kidney, brain ALT ... Alkaline Phosphatase, ALT ... ULN R Value = (ALT ... / ULN ALT) / (ALP ... Transaminitis #diagnosis #hepatology
Abnormal Liver Function Tests - Differential Diagnosis Algorithm for Transaminitis
Hepatocellular Pattern (ALT or AST > ALP):
: • Severe - ALT ... • Moderate - ALT ... Others • Mild - ALT ... Pattern (ALP > ALT ... Algorithm #diagnosis #hepatology
Elevated Liver Enzymes - Differential Diagnosis Algorithm
Severe ALT > 15x ULN
 • Viral
 • Drugs/Toxins
 •
Algorithm Severe ALT ... HELLP Moderate ALT ... • Others Mild ALT ... Others #LFTs #Hepatology
Liver Chemistries - Interpretation of LFTs

R-value: Serum (ALT/ULN ALT) / (Alk phos/ULN ALP)
 • R >
R-value: Serum (ALT ... /ULN ALT) / (Alk ... to liver than ALT ... • ALT: Specific ... #differential #Hepatology
Hepatitis B - Treatment Indications
Treatment not indicated:
 • Immune tolerant state - HBe-Ag detectable, high HBV
IU/mL), normal ALT ... IU/mL), normal ALT ... IU/mL), normal ALT ... 2000 IU/mL and ALT ... Indications #management #hepatology
Hepatocellular Liver Injury - Differential Diagnosis Framework:
Liver Injury → liver test abnormalities without evidence of liver
increase in AST/ALT ... compared with AST/ALT ... Differential #Diagnosis #hepatology
Liver Chemistry Tests - AST, ALT, Alkaline Phosphatase and Bilirubin Metabolism
AST and ALT:
 • AST: liver
Chemistry Tests - AST, ALT ... Metabolism AST and ALT ... cytoplasmic (CAST) • ALT ... AlkPhos #Bilirubin #Hepatology
Clinical Diagnosis of Autoimmune Hepatitis
 - Onset of jaundice within prior 8 weeks
 - Ongoing consumption
- AST >50, AST/ALT ... >400 IU/L, AST/ALT ... Hepatitis #Diagnosis #Hepatology
Clinical diagnosis of Alcoholic Hepatitis (AH)
 • Onset of jaundice within prior 8 weeks
 • Ongoing
• AST >50, AST/ALT ... >400 IU/L, AST/ALT ... Hepatitis #AH #hepatology