McMahon Rhabdomyolysis Risk Score

Predict the risk of severe acute kidney injury or mortality in patients with rhabdomyolysis

The global unit selector only affects unanswered questions
1.Age?
2.Sex?
3.Initial Creatinine?
4.Initial Calcium <7.5 mg/dL / 1.88 mmol/L?
5.Initial CK >40,000?
6.Etiology is seizure, syncope, exercise, statin or myositis?
7.Initial Phosphate?
8.Initial Bicarbonate <19 mEq/L?
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1. Age?

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About this Calculator

The McMahon score was developed to predict the risk of severe acute kidney injury or mortality in patients presenting to the hospital with rhabdomyolysis (defined as a serum CPK on admission of >1000 U/L and a peak CPK of >5000 U/L)

The score identifies a low risk population who are unlikely to have severe adverse outcomes including AKI as a result of the injury. The AUC for the final model was 0.82 in the entire cohort.

The score was validated in a follow-up paper by an independent group.

References

McMahon GM, Zeng X, Waikar SS.

A risk prediction score for kidney failure or mortality in rhabdomyolysis.

JAMA Internal Medicine 2013 October 28, 173 (19): 1821-8

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