A 68-year-old woman with hypertension and osteoarthritis presents with rising creatinine and edema after starting high-dose ibuprofen. Labs show BUN 4...

Question

A 68-year-old woman with hypertension and osteoarthritis presents with rising creatinine and edema after starting high-dose ibuprofen. Labs show BUN 42 mg/dL, creatinine 2.1 mg/dL (baseline 1.0), urine sodium 10 mEq/L, FeNa 0.5%, and bland urinary sediment. What is the most likely diagnosis?

Accepted Answer

Prerenal azotemia due to decreased effective arterial volume

Answer

Acute tubular necrosis

Answer

Acute interstitial nephritis

Answer

Postrenal obstruction

Answer

Chronic kidney disease progression

us-abfm MCQ (SBA): Prerenal Azotemia

A 68-year-old woman with hypertension and osteoarthritis presents with rising creatinine and edema after starting high-dose ibuprofen. Labs show BUN 42 mg/dL, creatinine 2.1 mg/dL (baseline 1.0), urine sodium 10 mEq/L, FeNa 0.5%, and bland urinary sediment. What is the most likely diagnosis?