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152 Cards in this Set

  • Front
  • Back
woman presents with diffuse goiter and hyperthyroidism:what are the expected values of TSH and thyroid hormone?
low TSH, high thyroid
48- year old woman presents with progressive lethary and extreme sensitivity to cold:diagnosis please?
hypothyroid
patient with elevated serum cortisol levels undergoes a dexamethasone suppresion test. 1 mg of dexamethasone does not decrease cortisol levels, but 8 mg does: diagnosis
pituitary tumor (ACThoma)
50 yo man complains of diarrhea- his face is plethoric and a heart murmur is detected: diagnosis?
carcinoid syndrome
woman of short stature presents with shortened 4th and 5th metacarpals- what endocrine disoder?
albright's hereditary osteodystrophy, or pseudohypoparathyroidism
diabetic patient presents with hypoglycemia but low levels of C-peptide- diagnosis?
surreptitious insulin injections
patient's MRI shows filling of sella turcica with cerebrospinal fluid: most likely clinical presentation
normal- residual pituitary tissue is functional and can compensate: empty sella turcica syndrom
patient complains of double vision, gynocomastia, and headaches: most likely diagnosis
prolactinoma-
patient presents with hypotension and bronzed skin: diagnosis
1 adrenocortical deficiency (addison's )
primary regulatory control and secretory product of : zona glomerulosa
Renin- angiontensin system ---aldosterone
primary regulatory control and secretory product of: zona fasciculata
ACTH, hypothalamic CRH ---- Cortisol, sex hormones
primary regulatory control and secretory product of: zona reticularis
ACTH, hypothalamic CRH ---- sex hormones
primary regulatory control and secretory product of: adrenal medulla
preganglionic sympathetic fibers----- catacholamines
most common tumor of the adrenal medulla of adults
pheochomocytoma
most comm tumor of the adrenal medulla in children:
neuroblastoma- does not cause episodic HTN like pheochromocytoma
adrenal drainage (veins) of right adrenal gland vs left
left adrenal gland goes to left renal vein to IVC, while right goes straight to IVC (same as left and right gonadal veins)
alpha subunit is common to ____, ___, ____, and _____ hormones:
FSH, LH, TSH, bHCG
Flat pig nemonic-
just a reminder here
in the islet of langerhans- the alpha cells secrete ______ and are located ______
glucagon , peripherally
in the islet of langerhans- the beta cells secrete ______ and are located ______
insulin, centrally
in the islet of langerhans- the delta cells secrete ______ and are located ______
somatostatin, interspersed
prolactin _____ DA release from the hypothalamus and _____ GnRH release
increases, decreases
the hormone that blocks anterior pituitary release of prolactin is _______, while _____ increases secretion of prolactin at the pituitary
DA, TRH
bromocriptine is a DA _______ and will _______ release of prolactin from the anterior pituitary
agonist, inhibit
amenorrhea is commonly seen in prolactinomas because prolactin inhibits _____
GNrH
TRH stimulates both _____ and ______
TSH , prolactin
somatostatin inhibits both ____ and _____
GH, TSH
decrease sex hormones, decrease cortisol, increase mineralocorticoids. HTN, hypokalemia- phenotypically female but no maturation
17 alpha hydroxylase deficiency : can't get out of column 1 - make aldosterone
decrease cortisol, increased ACTH, decrease mineralocorticoids, increased sex hormones- masculinization, femal pseudohermaphrotitism, hypotension, hyperkalemia, increase plasma renin, volume depletion. Salt wasting can lead to hypovolemic shock in newborn.
21-hydroxylase deficiency- most common form (no aldo or cortison)
decrease cortisol, aldosterone, corticosterone, increase sex hormones resulting in masculinization, hypertension
11beta-hydroxylase deficiency
testosterone to DHT enzyme
5alpha-reductase
testosterone to estradiol enzyme
aromatase
the _____ cells of the parathyroid secrete PTH
chief
decrease in _______ results in an increase in PTH
free serum Ca++
increases bone resporption of calcium and phosphate
PTH
increases kidney reabsorbtion of calcium in distal convoluted tubule
PTH
decreases kidney reabsorption of phosphate: hormone:
PTH
PTH increases 1,25 OH2 vit D production by stimulating ______ in the kidney
1alpha hydroxylase
PTH _____ serum Ca+, ____ serum phosphate, _____ urine phosphate
increases, decreases, increases (PTH = phosphate trashing hormone_)
T/F - PTH stimulates both osteoclasts and osteoblasts
TRUE- directly stimulates osteoblasts, indirectly stims osteoclasts
_____ directly increases intestinal calcium resorption: hormone
1,25 OH2 vitamin D------ (PTH stimulates vit D production- so it does this indirectly)
vitamin D__ is generated from sun-exposed skin, vitamin D__ is from plasnts.-- both are converted to ___ in the liver and ___ in the kidney
D3, D2, 25 OH, 1,25 OH2
vitamin D deficiency results in ____ in children and _____ in adults
ricketts, osteomalacia
Vit D increases absorption of both dietary ____ and ____.
ca, phosphate
triggers of increase 1,25 OH2 vitamin D:
increase PTH, decrease Ca, phosphate ----> vit D negative feedback on itself
following imbalances suggest what disorder: Ca up , Phosphate down , ALK phosphate up , PTH up
hyperparathyroidism
following imbalances suggest what disorder: Ca nl/up , Phosphate nl , ALK phosphate way up , PTH nl
paget's disease of the bone
following imbalances suggest what disorder: Ca up , Phosphate up , ALK phosphate nl/up , PTH down
vit D intoxication
following imbalances suggest what disorder: Ca down , Phosphate down , ALK phosphate up , PTH up
vit D deficiency (osteomalacia)
bone disorder following imbalances:
Ca nl , Phosphate nl , ALK phosphate nl , PTH nl
bad question - but profile in osteoporosis
following imbalances suggest what disorder: Ca nl , Phosphate nl , ALK phosphate nl , PTH up
renal insufficiency
calcitonin is made in the ______ cells of the thyroid
parafollicular (C cells)
calcitonin ____ bone resorption of calcium
decreased (opposes actions of PTH)
____ serum Ca causes release of calcitonin
increased
Most T3 is formed in the ______
blood
the 4 functions of T3 are (4Bs): ____, ____, ____, _____.
brain maturation, bone growth, beta-adrenergic effects, increase BMR (increase Na/K/ATPase activity = O2 consumption, RR, increase in body temp)
TSH stimulates _____ cells in the thyroids
follicular cells
hepatic failure would result in a ____ in TBG, while pregnancy would result in a ____ in TBG
decrease, increase (estrogen increases TBG)
functions of cortisol include: 5
1)anti-inflammatory, 2)increase gluconeogenesis, lipolysis, proteolysis, 3) decrease immune function, 4) maintain BP, 5) decrease bone formation
Insulin and IGF signal through ______ receptors
tyrosine kinase
brain and RBC take up glucose independent of insuline via _______ receptors
glut-1
dexamethasone supression test results: decrease cortisol after low dose
healthy axis
dexamethasone supression test results: high cortisol after low dose, decrease after high dose
ACTH tumor (Cushing's disease)
dexamethasone supression test results: high cortisol after low and high dose
ectopic ACTH (small cell carcinoma) or cortisol producing tumor
HTN, weight gain, moon facies, truncal obesity, buffalo hump, hyperglycemia, skin changes, osteoporosis, amernorrhea and immune suppression
cushing's syndrom
pituitary tumor leading to increased ACTH is call ______ disease
cushings
primary adrenal (hyperplasia/neoplasia) results in _____ ACTH and ______ syndrome
decreased , cushings
ectopic _____ production as seen in small cell lung cancer, can lead to cushing's syndrome
ACTH
primary ________, or Conn's syndrome, is caused by a _________ secreting tumor.
hyperaldosteronism, aldosterone
hypertension, hypokalemia, metabolic alkalosis, and LOW plasma renin
Conn's (hyperaldo)
secondary hyperaldosteronism is caused by ?
renal artery stenosis, chronic renal failure, CHF, cirrhosis, or nephrotic syndrome.
secondary hyperaldosteronism is differentiated from primary base on what lab value?
plasma renin- low in primary (Conn's) and high in secondary
hypotension, and skin hyperpigmentation
addison's disease
deficiency of ____ and ____ due to adrenal atrophy causes addison's disease
aldosrterone and corticol
Adrenal atrophy, Absence of hormone production, involves all 3 layers of cortex:
addison's disease
adrenal hemorrhage syndrome associated with meningoccocal septocemia
waterhouse-friderichsen syndrome- acute adrenocortical insufficiency
pheochromocytoma derived from _____ cells of __________ origin
chromaffin cells of neural crest origin
Pheochromocytomas are associated with _______ and MEN types ____ and ____
neurofibromatosis, men types II, III
most common adrenal medulla tumor in adults
pheochomocytoma
most common adrenal medulla tumor in children - associated with the ____ oncogene
neuroblastoma, n-myc
pheochromocytomas present with ____ in the urine, while neuroblastomas present with _____ in the urine
VMA, HVA
postpartum- fatigue, anorexia, poor lactation, and loss of pubic and axillary hair-
sheehan's
pheochromocytomas are treated with __ antagonists, especially _____, a nonselective irreversible blocker
alpha, phenoxybenzamine
rule of 10's- 10% malignant, bilateral, extra-adrenal, calcify, kids, familial applies to what disease?
pheochomocytoma
pancreas (Z-E syndrome, insulinomas, VIPomas), parathyroid, and pituitary tumors (prolactinoma)- presents with kidney stones and stomach ulcers-
MEN type I
medullary carcinoma of the thyroid, pheochromocytoma, parathyroid tumor
MEN type II
medullary carcinoma of the thyroid, pheochromocytoma, oral and intestinal ganglioneuromatosis (mucousal neuromas)
MEN type III
all MEN syndroms have ______ inheritance, and type II, III are associated with the ____ gene
AD, ret
rule regarding MEN syndromes and Ps-
inverse- MEN 1 has 3 P's (pit, panc, parathyroid), MEN II (pheo, parathyroid), MEN III (pheochromo)
cold intolerance, hypoactivity, weight gain, fatigue, lethargy, decreased appetite, constipations, weakness, decreased reflexes, myxadema, dry, cool skin, and coarse brittle hair
hypothyroid
heat intolerance, hyperacticity, weight loss, chest pain/palpations, arrythmias, diarrhea, increased reflexes, warm, moist skin, and fine hair
hyperthyroidism
stimulating TSH receptor antibodies.
Graves- type II hypersensitivity
ophthalmopathy, pretibial myxadema, diffuse goiter, presents during stress
Graves- type II hypersensitivity
thyroid replaced by fibrous tissue
riedel's thyroiditis
underlying graves with stress-induces catacholamine surge leading to death by _________: diagnosis
arrythmia- thyroid storm
slow course, moderatley enlarged nontender thyroid- wuth lymphocytic infiltrate in the germinal centers: hurthle cells on histology: hypothyroid
hoshimoto's thyroiditis
antimicrosomal and antithyroglobulin abs
hoshimoto's thyroiditis
self-limited hypothyroid often post-flu-like illness (may be hyperthyroid early in course)
subacute thyroiditis (de quervain's)
hypothyoid with elevated ESR, jaw pain, early inflammation, very tender thyroid gland- histology show granulomatous inflammation
subacute thyroiditis (de quervain's)
goider post iodine deprivation and iodine restoration-
toxic multinodular goiter - releases T3 and T4
most common thyroid cancer-
papillary- good prognosis
thyroid cancer with "ground-glass" nuclei (orphan annie)
papillary
thyroid cancer from parafollicular "c-cells" that produce calcitonin and sheets of cells in amyloid stroma
medullary
thyroud cancer associated with MEN types II, III
medullary
lymphoma in thyroid gland is associated with what disease?
hashimoto's thyroiditis
endemic cretinism is caused by _________ while sporadic is caused by a defect in ________.
lack of iodine, defect in T4 or developmental failure of thyroid
pot-bellies, pale, puffy faced child with protruding umbilicus and protuberant tongue
cretinism- common in china
large tongue with deep furrows, deep voice, large hands and feet, coarse facial features, impared glucose intolerance
acromegaly (GH)
what is used to treat acromegally?
octreotide- (somatostatin that inhibits release of GH, glucagon, insulin, and gastrin)
cystic bone spaces filled with brown fibrous tissue ?
osteitis fibrosa cystica(part of hyperparathyroidism)
what are the stone, bones, and groans of primary parathyroidism?
stones = hypercalciuria bones= osteitis fibrosa cystica gorans= weakness an/or constipation
secondary hyperparathyroidism is commonly cuased by a decrease in _________, most often due to _________
serum calcium, chronic renal failure
difference between 1 and 2 hyperparathyroidism as far as blood labs-
primary (usually adenoma) = hypercalcemia, hypo phosphatemia, secondary (renal disease) =hypocalcemia, hyper phosphatemia,
bone lesion due to seconadry hyperPTH due to renal disease is called _______
renal osteodystrophy
chvostek's sign- =?
tap facial nerve, contraction of muscles indicates hypocalcemia (tetany) as in hypoparathyroidism
trousseau's sign =?
occlusion of braichial artery with BP cuff- carpal spasm- as in hypocalcemia in hypoPTH
AD disorder with kidney unresponsive to ______. Results in hypocalcemia, shortened 4th/5th digits, short stature..
PTH, psuedohypoparathyroidism
treatment for prolactinoma
bromocriptine (DA agonsist)
what are chronic manifestations of Diabetes and nonenzymatic glycosylation on small vessels?
diffuse thickening of the basement membrane leads to retinopathy, glaucoma, nephropathy (nodular sclerosis,progressive proteinuria, chronic renal failure, arteriosclerosis leading to HTN, kimmelstiel-wilson nodules)
what are chronic manifestations of Diabetes and nonenzymatic glycosylation on large vessels?
large vessel artherosclerosis, CAD, peripheral vascular occclusive disease and gangrene, cerebrovacular disease
what 2 manifestations of osmotic damage are seen in DM
neuropathy ( monot, sensory, autonomic degeneration), and cataracts (sorbitol accumulation)
HLA ___ and ___ are associated with type I DM, not type II
DR3 DR4
Diabetic ketoacidosis is usually triggered by _____
increase in insulin requirement as in stress or infection
where do ketone bodies come from during DKA
excess fat breakdown (insulin resistance) and increased ketogenesis from the increase in free Fas, which are made into ketone bodies (beta-hydroxybutyrate> acetoacetate)
signs and symptoms of DKA
kussmaul respirations, N,V, abd. Pain, psychosis/delerium, dehydration. Fruity breath odor
in DKA, the follwing labs are seen hyperglycemia, ___H+, ___ HCO3-, increase blood ketones, leukocytosis, ____kalemia, ____ intracellular K+ due to decreased insulin.
increase, decrease, hyper, decrease
mucormycosis, rhizupus infections, cerebral edema, cardiac arrhythmias, heart failure are all copmlications of:
DKA
Tx for DKA includes:
fluids, insulin, K (intracellular stores), glucose if necessary to prevent hypoglycemia
intense thirst and polyuria without ability to concentrate urine:
Diabetes Insipidus (no ADH)
test for diabetes insipidus:
water deprivation test- urine osmolality doesn't increase (response to desmopressin distinguishes between primary (works) and secondary (as in kidney- doesn't work)
in DI, urine S.G. ______, while serum OSM ________
decreased (<1.006), increased >290 OSM
central DI is treated with ________, while nephrogenic DI is treated with ________
desmopressin (ADH analog), diarrhetics (hydroclorothiozide, indomethacin? , amiloride) both need adequate fluid intake
SIADH results in 1______2______3______
excessive water retention, hyponatremia, urine osmolarity> serum osmolarity
SIADH treatment is with 1_______(easiest) or 2________
water restriction, demeclocycline?
top 4 causes of SIADH:
1) ectopic- small cell lung cancer 2) CNS disorder/head trauma 3) pulmonary disease 4) drugs (cyclophosphamide)
recurrent diarrhea, cutaneous flushing, asthmatic wheezing, and right-sided valvular disease: increase in 5-HIAA in urine
carcinoid syndrome
most common tumor of appendix
carcinoid syndrome
carcinoid tumors are derived from ______ cells, and secrete high levels of ______ (although not seen if goes through 1st pass metabolism)
neuroendocrine, 5-HT
treatment for carcinoid syndrome
octreotide- (somatostatin that inhibits release of GH, glucagon, insulin, and gastrin)
rule of 1/3's appies to what? 1/3 metastasize, 1/3 present with 2nd malignancy, 1/3 multiple
carcinoid syndrome
gastrin-secreting tumor of pancrease or duodenum- causes recurrent ulcers.
Zollinger-ellison syndrome
MEN type I assocaited with this disease of the pancrease or duodenum
Zollinger-ellison syndrome
MOA of sulfonylureas
close the K+ channel in B-cell --> depolarizes cell--> triggering insulin release via influx of Ca++
MOA of metformin
unkown- possibly decrease gluconeogensis
MOA of glitazones
increase target cell response to insulin (skeletal muscle, adipose tissue)
MOA of alpha-glucoside inhibitors
inhibit intestinal bruch border alpha-glucosidases- delayed sugar hydrolysis and glucose absorption--> decreased postprandial hyperglycemia
which diabetic drug class can result in disulfam-like effects
sulfonylureas
lactic acidosis is the most grave toxicity of this diabetes drug
metformin
these diabetic drugs can result in weight gain, edema, hepatotoxicity, and CV toxicity. Nasty
glitazones
tolbutamide and chlorpropamide are 1st generation ______
sulfonylureas
glyburide , glimepiride, anf glipizide are 2nd gen______
sulfonylureas
acarbose and miglitol belong to the ____ class of antidiabetic drugs
alpha-glucosidase inhibitors