Question

A 58-year-old man is admitted with community-acquired pneumonia and sepsis. On day 3 of hospitalization, his creatinine rises from 1.0 to 2.1 mg per dL and urine output falls to 0.3 mL per kg per hour. Urinalysis shows muddy brown granular casts. What is the most likely diagnosis?

Accepted Answer

Postrenal obstruction

Answer

Prerenal azotemia from volume depletion

Answer

Acute tubular necrosis

Answer

Acute interstitial nephritis

Answer

Chronic kidney disease

Practice question

A 58-year-old man is admitted with community-acquired pneumonia and sepsis. On day 3 of hospitalization, his creatinine rises from 1.0 to 2.1 mg per dL and urine output falls to 0.3 mL per kg per hour. Urinalysis shows muddy brown granular casts. What is the most likely diagnosis?