Tutorial 2 Flashcards
t/f hyponatramia/hypernatraemia is a problem of sodium conc
no, it’s a water problem
Where is ADH made
in hypothalamus, released from post pit
How could hypothalamus be damaged such that ADH production is decreased
Tumour, trauma, inflammation (incl. autoimmune)
ADH deficiency leads to….
hypernatraemia
Presentation of lack of ADH
Polyuria and polysypsia
In a water deprivation test why is a patient weighed
If they lose more than 3% of body weight it means they are losing too much water
If diabetes, fasting glucose above what
7mmol
What is the diagnosis for case 1
Cranial diabetes insipidus
How can cranial DI be treated
DDAVP (=desmopressin)
What is causing confusion and unsteadiness
Hyponatreamia
Diagnosis here
small cell lung cancer which is secreting a lot of ADH –> SIADH, reabsorbing lots of water
Treatment
Restricting water intake, democlocycline (resistance) /vaptans
