JAUNDICE Flashcards
Hyperbilirubinemia characterized by yellow discoloration of the skin, sclera, and mucus membranes.
JAUNDICE
no observable yellow discoloration
Overt jaundice (1.0-1.5 mg/dl)
Yellow discoloration in jaundice is only observed if the total bilirubin reach
≥3.0-5.0 mg/dl
more commonly termed for serum or plasma with yellow discoloration due to hyperbilirubinemia
Icterus
Types of Jaundice
A. PRE-HEPATIC JAUNDICE
B. POST-HEPATIC JAUNDICE
C. HEPATIC JAUNDICE
Hemolytic jaundice, Unconjugated hyperbilirubinemia
PRE-HEPATIC JAUNDICE
Caused by too much red blood cell destruction: HDN, Hemolytic anemia, Malaria
PRE-HEPATIC JAUNDICE
PRE-HEPATIC JAUNDICE Laboratory findings:
o Indirect Bilirubin: ___________
o Direct Bilirubin: ________
o Urobilinogen: ________
o Urine bilirubin: _________
o Indirect Bilirubin: ↑ (toxic as it can cross BBB causing kernicterus)
o Direct Bilirubin: Normal
o Urobilinogen: Normal
o Urine bilirubin: Negative
What is kernicterus
bilirubin deposition in the brain causing severe motor dysfunction and retardation
Aka: Obstructive Jaundice
POST-HEPATIC JAUNDICE
Caused by failure of bile to flow to the intestine or impaired bilirubin excretion
POST-HEPATIC JAUNDICE
POST-HEPATIC JAUNDICE Laboratory diagnosis:
o Indirect bilirubin:
o Direct bilirubin:
o Urobilinogen:
o Urine bilirubin:
o Alkaline phosphatase (no.1 marker for obstructive/post-hepatic jaundice):
o Indirect bilirubin: Normal
o Direct bilirubin: ↑
o Urobilinogen: ↓
o Urine bilirubin: Positive
o Alkaline phosphatase (no.1 marker for obstructive/post-hepatic jaundice): ↑
Increases due to ↑ excretion rate
Hepatocellular combined jaundice
HEPATIC JAUNDICE
Caused by disorders of bilirubin metabolism, transport defects, hepatocellular injury or destruction
HEPATIC JAUNDICE
Most commonly caused by inherited disorders
HEPATIC JAUNDICE
HEPATIC JAUNDICE Laboratory findings:
o Indirect bilirubin:
o Direct bilirubin:
o Urobilinogen:
o Urine bilirubin:
o Indirect bilirubin: ↑
o Direct bilirubin: ↑
o Urobilinogen: ↓
o Urine bilirubin: Positive