Question

A 70-year-old man with dehydration from diarrhoea has serum creatinine rise from 90 µmol/L baseline to 220 µmol/L. Urine sodium is low and urine osmolality is high. Blood pressure improves with fluids and creatinine trends down. What is the most likely cause of his acute kidney injury?

Accepted Answer

Pre-renal azotaemia from hypovolaemia

Answer

Acute tubular necrosis

Answer

Acute interstitial nephritis

Answer

Post-renal obstruction

Answer

Chronic kidney disease

Practice question

A 70-year-old man with dehydration from diarrhoea has serum creatinine rise from 90 µmol/L baseline to 220 µmol/L. Urine sodium is low and urine osmolality is high. Blood pressure improves with fluids and creatinine trends down. What is the most likely cause of his acute kidney injury?