II. Indications
- Predicts Rhabdomyolysis associated Renal Failure
III. Criteria: Assumes Rhabdomyolysis with initial CPK >1000 (or 5 times normal)
- Age
- Score 0: <=50 years old
- Score 1.5: 51-70 years old
- Score 2.5: 71-80 years old
- Score 3: >80 years old
- Gender
- Score 0: Male
- Score 1: Female
- Initial Serum Creatinine
- Score 0: <1.4 mg/dl (<125 µmol/L)
- Score 1.5: 1.4 to 2.2 (125-195 µmol/L)
- Score 3: >2.2 mg/dl (>195 µmol/L)
- Initial Serum Calcium <7.5 mg/dL (1.88 mmol/L)
- Score 0: No
- Score 2: Yes
- Initial Creatine Phosphokinase (CK) >40,000
- Score 0: No
- Score 2: Yes
- Caused by Seizure, Syncope, Exercise, Statin or Myositis
- Score 0: Yes
- Score 3: No
- Initial Phosphate
- Score 0: <4 mg/dl (<1 mmol/L)
- Score 1.5: 4 to 5.4 mg/dl (1-1.4 mmol/L)
- Score 3: >5.4 mg/dl (>1.4 mmol/L)
- Initial Serum Bicarbonate <19 mEq/L (<19 mmol/L)
- Score 0: No
- Score 2: Yes
IV. Interpretation
- Score <6: Low risk of serious adverse outcomes
- Risk <3% for death or Acute Kidney Injury requiring renal replacement therapy
- Score >=6: Not Low Risk
- Increased risk of serious adverse outcomes (Test Sensitivity 83%)
V. Resources
VI. References
- McMahon (2013) JAMA Intern Med 173(19):1821-8