Specimen Name Result Units Range
Plasma Sodium 135 mmol/L (135-145)
Potassium 6.3 mmol/L (3.5-5.5)
Chloride 96 mmol/L (100-109)
Bicarbonate 15 mmol/L (22-32)
Urea 55 mmol/L (2.7-7.2)
Creatinine 790 μmol/L (60-110)
Phosphate 2.05 mmol/L (0.80-1.45)
Total Calcium 1.92 mmol/L (2.10-2.55)
Albumin 32 g/L (34-48)
Total Protein 61 g/L (60-80)
Total Bilirubin 10 μmol/L (6-24)
ALP 85 U/L (30-110)
ALT 38 U/L (< 55)
AST 450 U/L (< 45)
LDH 658 U/L (110-230)
CK 35,000 U/L (< 200)
ABG pH 7.30 (7.36-7.44)
PaO2 54 mmHg (70-100)
PaCO2 35 mmHg (35-45)
HCO3- 15 mmol/L (21-26)
Urine Sodium 55 mmol/L (> 20)
Osmolality 360 mmol/kg
Creatinine 5 μmol/L

Middle-aged trauma patient - bilateral lower limb crush injuries.
Rhabdomyolysis - ATN
  • High CPK → usually ≥ 30,000
  • Metabolic (↑AG) lactic acidosis
  • High K+ & PO4
  • Low Ca++ / HCO3-
  • High AST, LDH

NB:

  • PO2 + 1.25*PCO2 ≈ 98 → high AaO2 gradient - even on RA
  • ?? other injuries explaining AaO2 gradient, e.g. resp., embolic, etc