Clinical Quiz: Elderly Man with Anorexia and Acute Renal Failure

A 75-year-old man presented to the emergency department with weakness, anorexia, and nausea, and was found to have acute renal failure with a creatinine of 7.9 mg/dL.

Past medical history included non-insulin dependent diabetes, hypertension, coronary artery disease with prior stenting and a more recent bypass graft placement, and low-grade bladder cancer in remission after recent intravesical chemotherapy. Six months ...