4th April 2024

A 32-year-old lady came in with increased thirst, nocturia and signs of dehydration

A 32-year-old lady came in with increased thirst, nocturia and signs of dehydration. Her random glucose test was 10.3 mmol/L, HbA1c was 36 mmol/mol, TSH 4.1 mIU/L. Her urine osmolality test showed 433mOsmol/kg. After 8 hours of fluid restriction, her urine osmolality was 438mOsmol/kg. She was given desmopressin 2 micrograms IM and urine osmolality repeated after 4 hours was 650mOsmol/kg. How would you interpret this water deprivation result?

Select the SINGLE most appropriate option from the list below. Select ONE option only.