Adrenal Function Flashcards
Hypertension, hyperkalemia, metabolic alkalosis
Hyperaldosteronism
Hypertension, spells of anxiety, palpitations, dizziness, and diaphoresis
Pheochromocytoma
Hypertension, rapid unexplained weight gain, red/purple stretch marks, and proximal muscle weakness
Excess cortisol
Cushing’s syndrome
Inappropriate hirsutism/virilization and inability to conceive
Congenital adrenal hyperplasia
Loss of appetite, unintentional weight loss, and pigmented skin
Primary adrenal insufficiency
How to treat hypofunction?
Hormone replacement
How to treat hyperfunction?
Pharmacologic suppression and/or surgery
Two embryologically distinct adrenal tissues
Outer adrenal cortex and inner adrenal medulla
Primary adrenal insufficiency
Addison’s Disease
autoimmune disease damages adrenal gland
Possibly caused by HIV/AIDs or Tb
High ACTH, low cortisol, hyponatremia
Secondary adrenal insufficiency
Reduced production of adrenocorticotropic hormone (ACTH)
(resulting in decreased cortisol)
Caused by loss of blood flow to pituitary
Tertiary adrenal insufficiency
Caused by suddenly stopping corticosteroids
Hormones to replace cortisol
hydrocortisone
prednisone
methylprednisone
Hormone to replace aldosterone
fludrocortisone acetate
main effector molecule that causes increases in blood pressure, influences renal tubuli to retain sodium and water, and stimulates aldosterone release from adrenal gland
Angiotensin II
Zona Glomerulosa
Produces aldosterone and other mineralocorticoids. Cells are small and clumped together and rich with smooth ER.