Adrenal Pharmacology Flashcards
Aldosterone acts on the ___ cells in the kidney
principal
Spironolactone is a ___ antagonist with side effects on__ and __ receptors
mineralocorticoid; androgen; progesterone
3 contraindications of Spironolactone- (think)
Renal insufficiency, pregnancy, hyperkalemia
Eplerenone is __ selective, same mechanism as spironolactone
more
Amiloride is __ sparing with ___ weak effect
potassium, diuretic
Mineralocorticoids will cause ___ in men
gynecomastia
__ deficiency should be treated with fludrocortisone, which is a ___
adrenal, synthetic mineralocorticoid
Side effects of fludrocortisone
hypertension, hypokalemia
Ask patients on fludrocortisone about ___ and __ cravings
presyncope, salt
Patients on fludrocortisone should get their _ bp checked
orthostatic
First line treatment of hypercortisol levels
surgical adrenalectomy or transsphenoidal pituitary surgery
Second line medical treatment of hypercortisol levels which blocks downstream effects of ___
RU-486 (mifepristone); cortisol
Metyrapone inhibits enzymes in the ___ pathway
steroidogenesis
__ and __ analogs block pituitary adenomas
Somatostatin, Dopamine
Pasireotide is a __ analog and can ___ the adenoma
somatostatin; shrink
Pasireotide side effects (3)
High glucose, cardiac conduction, gallstones
A cytotoxic adrenal enzyme inhibitor
mitotane
Can’t use 24 hour UFC with
mifepristone
When treating hypercortisolism, look for __ energy and improved __ (diet)
increased; appetite
Secondary adrenal insufficiency is only a __ deficiency while primary is both __ and ___ deficiency
glucocorticoid; mineralocorticoids; glucocorticoids
Hydrocortisone has a ___ half life but prednisone and dexamethasone half lives are much longer
physiologic
Patients on Hydrocortisone should ___ their dose when they are sick
increase
High dose hydrocortisone can overwhelm the ___ and act as a ___- therefore patients in crisis with primary adrenal insufficiency can not take their
cortisol-cortisone; aldosterone; mineralocorticoid replacement
Explain metyrapone testing for secondary adrenal insufficiency
Give metyrapone to block cortisol production- see if precursor goes up- if it does, ACTH is working and its not SAI. If it doesn’t, then it IS SAI