A 43-year-old man with pituitary macroadenoma has serum sodium 151 mmol/L and absent thirst after surgery. Urine is dilute and output is 5 L/day.

Question

A 43-year-old man with pituitary macroadenoma has serum sodium 151 mmol/L and absent thirst after surgery. Urine is dilute and output is 5 L/day. What is the most important management risk?

Accepted Answer

Severe hypernatraemia from adipsic diabetes insipidus

Answer

Thyrotoxic storm

Answer

Hypocalcaemia from hungry bone syndrome

Answer

Carbimazole agranulocytosis

Answer

Primary aldosteronism relapse

Adipsic diabetes insipidus — SCE Endocrinology MCQ

A 43-year-old man with pituitary macroadenoma has serum sodium 151 mmol/L and absent thirst after surgery. Urine is dilute and output is 5 L/day. What is the most important management risk?