A patient with polyuria has high plasma osmolality and inappropriately dilute urine. Urine osmolality rises substantially after desmopressin. What is ...

Question

A patient with polyuria has high plasma osmolality and inappropriately dilute urine. Urine osmolality rises substantially after desmopressin. What is the diagnosis?

Accepted Answer

Cranial arginine-vasopressin deficiency

Answer

Nephrogenic arginine-vasopressin resistance

Answer

Primary polydipsia with intact concentration

Answer

Osmotic diuresis from hyperglycaemia

Answer

Syndrome of inappropriate antidiuresis

Diabetes Insipidus — MRCP Part 1 MCQ

A patient with polyuria has high plasma osmolality and inappropriately dilute urine. Urine osmolality rises substantially after desmopressin. What is the diagnosis?