Ix + Tx Flashcards
Cushing’s syndrome/disease: 1st-line Ix?
raised plasma/urine cortisol
overnight dexamethasone suppression test
Cushing’s syndrome: 1st-line Tx?
Metyrapone/Fluconazole (inhibit cortisol synthesis)
Cushing’s disease: Gold Ix?
CRH test (cortisol increases)
Cushing’s disease: 1st-line Tx?
trans-sphenoidal surgery
Metyrapone/Fluconazole (inhibit cortisol synthesis)
Acromegaly: Gold Ix?
OGTT (no suppression)
raised IGF-1
Acromegaly: 1st-line Tx?
transsphenoidal surgery
octreotide (SST analogue)
Prolactinoma: 1st-line Tx?
cabergoline (dopamine agonist)
NFPA: 1st-line Tx?
cabergoline (dopamine agonist)
Carcinoid tumour: Gold Ix?
raised 24hr urinary 5-HIAA (serotonin metabolite)
Carcinoid tumour: 1st-line Tx?
surgical resection
Carcinoid crisis: 1st-line Tx?
octreotide (somatostatin analogue)
Conn’s syndrome: 1st-line Ix?
aldosterone:renin ratio (raised aldosterone)
K+ in Conn’s syndrome?
low
Conn’s syndrome: Gold Ix?
raised aldosterone, which is not suppressed with 0.9% saline or fludrocortisone)
Conn’s syndrome: 1st-line Tx?
laparoscopic adrenalectomy
(spironolactone 4 weeks pre-op)
K+ in Addison’s?
high
(sodium + cortisol are both low)
Addison’s: 1st-line Ix?
morning serum cortisol
Addison’s: Gold Ix?
synacthen test
(cortisol 30 mins after IM tetracosactide <550 nmol/L)
Addison’s: 1st-line Tx?
hydrocortisone + fludrocortisone
Secondary adrenal insufficiency: 1st-line Ix?
low ACTH
Secondary adrenal insufficiency: 1st-line Tx?
hydrocortisone
SIADH: 1st-line Ix?
low serum Na, high urine Na
SIADH: Gold Ix?
no response to 1-2L 0.9% saline
SIADH: 1st-line Tx?
restrict fluid
acute: IV hypertonic saline + furosemide
long-term: tolvaptan/demeclocycline