Endocrine Flashcards
Anterior pituitary
Growth (GH)
Metabolism (TSH, ACTH)
Sexual development (FSH, LH)
Pigmentation (MSH)
Posterior pituitary
Antidiuretic hormone (Vasopressin)
Adrenal cortex
Mineralocorticoids (aldosterone- regulates F/E)
Corticosteroids (cortisol- regulates metabolism)
Androgens (masculinization)
Adrenal Medulla
Catecholamines (norepinephrine and epinephrine- flight or flight)
Most life threatening deficiencies
(adrenal and thyroid) ACTH and TSH
Gigantism
Onset of growth hormone hypersecretion before puberty
Acromegaly
Growth hormone hypersecretion after puberty
Diabetes insipidus
Water metabolism problem caused by an ADH deficiency
symptoms of dehydrations
Increase in frequency of urination and excessive thirty
Dehydrations and hypertonic saline tests used for diagnosis
Urine diluted with low specific (
SIADH
Vasopressin secreted even when plasma osmolarity is low or normal
Feedback mechanisms do not function properly
Water is retained, results in hyponatremia (decreased serum sodium level)
Cushings S&S
Hyper-secretion of cortisol
General: moon face, buffalo hump, round torso, skinny legs, hirsutism
Cardio: HTN, bruising/petechiae
Skin: Thinning skin, striae, increased pigmentation
Musculoskeletal: Muscle atrophy, osteoporosis
Increased fasting glucose
More prone to infeciton
Cushings Etiology
Women more likely than men
Adrenal hyperplasia, tumors, steroid use
Most common cause is a pituitary adenoma- ACTH over secretes which in turn causes over secretion of cortisol
Pheochromocytoma
results in excessive secretion of catecholamines
AVOID PALPATION OF STOMACH
S&S Hypertensive crisis, pounding headache, palpitations, sweating, anxious, htn, flushed skin, tachycardia, may be hyperglycemic, nervous and excitable, tachypnea
Addisons
Insufficiency of cortisol
Addisonian crisis (acute adrenal insufficiency)
life threatening event, not enough cortisol and aldosterone, often in response to a stressful event Sodium decrease and Potassium increase rapidly Severe hypotension and vascular collapse Hypoglycemia Vitiligo - loss of pigmentation Renal shutdown Fatigue, weight loss, anorexia Intervention: fluids, steroids, glucose
Parathyroid gland
Secretes Parathormone (PTH) which regulates calcium and phosphorous metabolism by altering bone resorption.
Increased PTH acts on kidney to retain Calcium and excrete Phosphorous.
Normal Calcium: 8.5-9