High K+, pre-renal

I had something happen in a case the other day that I don't think I have seen in a long time, if ever. Case - 39 y/o Post-partum s/p C-section- bleeding into abdomen. Patient had slightly elevated creatinine. Hgb - ~7. She had pre-elampsia (I don't know how severe) and was on Mg+. She gets rushed to the OR. Upon arrival she was mildly tachycardic, very hypertensive, and obtunded but arousable. On her EKG, I thought it looked like peaked T's but wasn't suspecting elevated K at that... High K+, pre-renal
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