MEDizzy
MEDizzy
USMLE
Nephrology and urology
A 49 year old woman presents with acute kidney injury after an acute illness manifested by myalgia, diarrhoea and vomiting. Her BP is 84/50 mmHg and she has dry mucous membranes. She was taking ibuprofen, paracetamol and domperidone during the illness. Her renal function improves rapidly with intravenous (IV) fluids. Which one of the following findings are likely to be present?
Explanation
ExplanationThis is pre-renal injury, without evidence of acute tubular necrosis (ATN), as renal function improved fully with fluids. Therefore she would likely manifest low urine sodium, low urine fractional excretion of sodium and concentrated urine (high specific gravity). Dense granular casts would probably be present in ATN. There is no particular reason she should be hyponatraemic or hypercalcaemic.
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