Endo Flashcards
When epinephrine is released as a counterregulatory hormone to hypoglycemia, what is the MC clinical manifestation?
sweating
What are the 2 main physiologic activities for vasopressin (ADH)?
- conserves water
2. raise BP by causing constriction of the arterioles
What are the 2 main physiologic activities of oxytocin?
- Milk ejection from breasts
2. stimulates uterine contraction
What effect does somatostatin have on GH?
inhibits the release of GH from ant. pit.
How can a pt w/ prolactinoma be treated medically in order to dec. prolactin release?
dopamine agonists can suppress prolactin hormone release
What are the 2 main physiological effects of growth hormone in the body?
- promotes the growth of bone & muscle mass
2. increases blood glucose
What hormone deficiency state is the reason for the majority of adults to present to clinical practice?
FSH & LH deficiency
What is the medical therapy for a pt w/ excess GH secretion in a pt who is post-pubertal?
somastostatin analog (ex octreotide)
What dopamine agonists are used in the mgmt of prolactinoma?
cabergoline & bromocriptine
What hormones are secreted from the various portions of the adrenal gland?
Medulla: catecholamines Epi & NE
Zona glomerulosa: mineralocorticoids
Zona fasciculata: glucocorticoids
Zona reticularis: androgens
What is the classic WBC findings in a pt w/ Cushing’s Syndrome?
leukocytosis
Where is the MC site of ectopic cortisol pdt’n leading to Cushing’s Syndrome?
lung cancer (particularly small cell)
What clinical sign is seen in a pt w/ Addison’s dz that is not in a pt w/ other causes of adrenal insufficiency?
hyperpigmentation
What is the main test used in the assessment of a pt suspected of having Addison’s dz?
ACTH stimulation test
Name the condition that occurs as a result of hemorrhage into both adrenal glands.
Waterhouse-Friderichsen Syndrome
What catecholamine is secreted to the greatest extent in a pt w/ pheochromocytoma?
NE > Epi > dopamine
What metabolic effect condition is MCly confused w/ pheochromocytoma?
hyperthyroidism
What effect is seen in the thyroid gland in a pt who has struma ovarii?
hyperthryoidism
- due to increased secretion b/c these ovarian tumors have ectopic thyroid tissue capable of secreting thyroid hormone
What 2 PE signs will be seen in a pt w/ Graves’ dz vs other causes of hyperthyroidism?
- pretibial myxedema
2. exophthalmus
What is the most serious SE that occurs in a pt w/ hyperthyroidism that is treated w/ PTU or methimazole?
agranulocytosis
For a pt w/ hyperthyroidism who is treated w/ radioactive iodine, what is the average length of time until the pt becomes euthyroid?
2-3 mths
What is the classic DTR abnormality that occurs in a pt w/ hypothyroidism?
delayed tendon reflex relaxation
What 2 thyroid Abs are ordered in the assessment of Hashimotos’s thyroiditis?
- thyroid peroxidase
2. antithyroglobulin Abs
What are the 2 MC metabolic effects seen in a pt w/ myxedema coma?
hyponatremia & hypoglycema
Name the MC precipitating factor for the development of subacute thyroiditis:
preceding URI or other viral syndrome
What is the MC setting for silent (PAINLESS) thyroiditis to occur?
post-partum
What are the typical lab findings in a pt w/ silent (PAINLESS) or lymphocytic thyroiditis?
sed rate is normal
What is the recommended next step for a pt who has a single firm thyroid nodule but normal thyroid fxn tests?
FNA bx
What is the MC type of endocrine malignancy?
thyroid cancer
Pts w/ iodine deficiency are at highest risk for the development of what type of thyroid cancer?
follicular cancer
What type of thyroid cancer is most difficult to identify via a FNA bx?
follicular cancer
What is the MCly identified underlying cause for hyperparathyroidism?
parathyroid adenoma (80%)
What are the 2 MC disorders resulting in high bone turnover that results in hypercalcemia?
- hyperthyroidism
2. immobilization
What eye disorder is visible in a pt w/ long-standing hyperparathyroidism?
banded keratopathy
gray ring around the iris that occurs from high calcium levels
banded keratopathy
What bone disorders result from chronic hyperparathyroidism?
osteopenia & bone cysts (osteitis fibrosa cystica)
What are the 2 MC etiolgies for hypoparathyroidism?
- iatrogenic
2. Mg deficiency
What PE is MCly seen in a pt w/ familial hypertriglyceridemia?
eruptive & palmar xanthomas
What is the optimal LDL goal for a pt who suffered a high risk for coronary artery event or who has coronary artery equivalent?
<70 LDL
What is the MCly used fibrate used in clinical medicine?
fenofibrate (Tricor)
phenomena due to nocturnal hypoglycemia which results in an increase in the release of counterregulatory hormones usch as Epi which causes rebound hyperglycemia by 7 AM
Somogyi phenomena
phenomena in which there is an early AM circadian increase in the plasma glucose that occurs as a result of normal spikes of nocturnal GH
Dawn phenomenon
What is the motor abnormality that results when CN III is involved w/ diabetic motor neuropathy?
diplopia & ptosis
What is the motor deficit for CN IV & VI?
diplopia
What is the most likely underlying condition for necrobiosis lipodica diabeticorum?
DM
Glitazones should be avoided in what clinical conditions?
liver dz & HF
What class of diabetic meds decrease post prandial blood glucose, decrease glucagon secretion, decreased hepatic glucose pdt’n & decreases food consumption & gastric empyting?
Amylins
What is the main synthetic amylin analog that is used in the US?
Pramlintide [Symlin]
2 hormones that are released by the post. pit gland
- vasopressin (ADH)
2. oxytocin
What is the MC infiltrative dz that affects the pit. gland?
hemochromatosis
Hypopituitarism caused by pituitary stalk dysfxn that occurs as a result of post-partum hemorrhage or post-partum HoTN is known as:
Sheehan’s syndrome
Uterine failure due to overzealous stripping of the uterine cavity during a D&C
Asherman’s syndrome