Diabetes Insipidus Flashcards
Central DI
Low osmolality after fluid deprivation
Normalised osmolality after desmopressin
Low osmolality after fluid deprivation
Normalised osmolality after desmopressin
Central DI
Nephrogenic DI
Low osmolality after fluid deprivation
Low osmolality after desmopressin
Low osmolality after fluid deprivation
Low osmolality after desmopressin
Nephrogenic DI
Psychogenic polydipsia
High osmolality after fluid deprivation
High osmolality after desmopressin
High osmolality after fluid deprivation
High osmolality after desmopressin
Psychogenic polydipsia
When should you think DI
Polyuria + polydipsia AND low potassium AND no evidence of DM
Cause of central
Transphenoidal surgery
Pituitary gland tumour
Cause of nephrogenic
Lithium
Primary hyperparathyroidism
Cause of psychogenic polydipsia
Schizophrenia
