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NBME 20 Answers

nbme20/Block 1/Question#36

A 56-year-old man is admitted to the hospital after ...


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submitted by hayayah(603),

Rhabdomyolysis can present looking like a kidney injury (it can lead to acute tubular necrosis as well). The electrolyte findings are just like renal failure (Inc. K+, inc. PO4-, dec. Ca)

To differentiate between rhabdomyolysis and kidney injury, you check the urine to see if there are any RBCs. In rhabdomyolysis there are no free RBCs in the urine.

ergogenic22  "Crush injury" is a buzz word for rhabdo +2  
ibestalkinyo  The mechanism by which AKI occurs after rhabdomyolysis are due to free radical formation. Other urine finding include blood on dipstick, but as hayayah said, no frank RBCs. +1