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Mr. Jeffers was admitted 2 days ago for a carotid endarterecto my. A Foley catheter was inserted intmopemtiyeiy and remains in place. His urine output has declined markedly
despite continuele fluid infusion. Today his morning labs reveal a BUN of 19 mgde and a
creatinine of 2 mgde. A leading differential includes: ‘1“ A Foley lodged in the urethra causing post-
renal failure f" B Decreased renal perfusion causing prerenai
failure r’ l: Age-related decreased eGFR causing
prerenal failure i!“ D Post-surgical rhabdomyolysis causing
intrarenal failure