adrenal and pituitary summary pdf Flashcards

(50 cards)

1
Q

chronic glucocorticoid excess

A

cushings disease

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2
Q

caused by therapy with glucocorticoids

A

iatrogenic cushings

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3
Q

caused by overproduction of adrenococorticotropic hormone (ACTH) by pituitary gland adenomas

A

endogenous cushings

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4
Q

cushings presentation

A

obesity involving the face, neck, trunk, abdomen
HTN
hirsutism
acne
amenorrhea
depression
thin skin
easy brushing
DM
osteopenia

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5
Q

where is corticotropin releasing hormone produced

A

hypothalamus

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6
Q

what hormone stimulates the anterior pituitary gland to release ACTH (corticotropin)

A

corticotropin releasing hormone

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7
Q

what stimulates the adrenal cortex to produce cortisol

A

ACTH

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8
Q

diagnosing cushings is based on what

A

s/s of hypercortisolism
dexamethasone supression test
24hr urine cortisol measurement

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9
Q

treatment of minimization of corticosteroid exposure is for which type

A

iatrogenic

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10
Q

pharmacotherapy is aimed at what

A

reducing cortisol production or activity with drugs, radiation, or surgery

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11
Q

MOA- inhibit CYP450 dependent enzymes and cortisol synthesis

A

ketoconazole

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12
Q

MOA- cytotoxic drug that suppresses ACTH secretion and reduces synthesis of cortisol

A

mitotane

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13
Q

MOA- decreases cortisol synthesis by inhibition of 11-hydroxylase activity

A

metyrapone

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14
Q

ketoconazole counseling points

A

should be taken with food
separated from antacids by at least 2 hours
watch for abdominal pain, yellow skin and pale stool

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15
Q

ADE of ketoconazole

A

N/V
HA
impotence
hepatotoxicity

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16
Q

ADE of metyrapone

A

N/V
dizziness
sedation

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17
Q

ADE if mitotane

A

N/V/D
tiredness

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18
Q

mitotane box warning

A

adrenal crisis occurs is the setting of shock or severe trauma and response to shock is impaired. administer hydrocortisone, monitor for escalating signs of shock and discontinue mitotane until recovery

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19
Q

ketoconazole is CYP450 3A4 enzyme inhibitor, what drugs should be avoided

A

drugs that lower gastric acidity, these will decrease absorption of ketoconazole

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20
Q

what should be monitored with mitotane

A

cortisol

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21
Q

caused by auto immune mediated destruction of the adrenal cortex

A

Addisons disease (primary adrenal insufficiency)

22
Q

addisons disease results in what deficiency

A

glucocorticoid and mineralocorticoid

23
Q

occurs after cessation of chronic exogenous corticosteroid use

A

secondary adrenal insufficiency

24
Q

endocrine emergency precipitated by severe stress

A

acute adrenal insufficiency (addisonian crisis)

25
glucocorticoid deficiency presentation
wight loss abdominal pain depression
26
mineralocorticoid deficiency presentation
dehydration hypotension hyperkalemia salt craving
27
what is synthesized when cholesterol is converted to pregnenolone by ACHT stimulation
cortisol
28
adrenal cortex secretes
aldosterone cortisol androgenic hormones
29
aldosterone is what kind of corticosteroid
mineral
30
what enhances reabsorption of sodium and water from the distal tubule in the kidney and increases urinary potassium excretion
mineralocorticoids (aldosterone)
31
what affects glucose, carb, and fat metabolism produce anti inflammatory and immunosuppressive effects affects other physiologic processes
glucocorticoid
32
chronic administration of corticosteroids results in
inhibition of pituitary ACTH secretion and reduction of cortisol production
33
abrupt cessation of steroids may result in
adrenal insufficiency
34
what test can assess hypercortisolism
ACHT stimulation test
35
Addisons disease requires lifelong replacement of what
glucocorticoid and mineralocorticoid
36
what is the drug of choice for acute adrenal crisis
hydrocortisone 100mg IV q8h
37
stress doses of corticosteroids may be given for
minor illness injury surgery
38
gradual tapering of exogenous corticosteroids reduces risk of
adrenal insufficiency in patients with HPA axis suppression
39
which drug has minimal anti inflammatory activity and is used only when mineralocorticoid activity is needed, such as when increased BP is desired
fludrocortisone
40
glucocorticoid increase blood glucose by
stimulating gluconeogenesis and glycogenolysis fat deposition is increased
41
catabolic effects occur where
lymphoid and connective tissue, bone, muscle, fat, skin
42
glucocorticoid may inhibit inflammation and immunosuppression by
reducing prostaglandin and leukotriene synthesis decreasing neutrophils at site of inflammation inhibiting macrophage function
43
counseling
may cause stomach upset, take with food preferred to take before 9am may mask signs of infection may increase insulin or oral hypoglycemic requirements requirements if diabetic watch for weigh gain, muscle weakness, sore throat, or infection report tiredness, stomach pain, weakness, high or low blood sugar long term therapy- wera medication identification do not discontinue abruptly
44
ADE
HTN sodium and water retention atherosclerosis insomnia anxiety and depression psychosis obesity hyperglycemia hypokalemia amenorrhea impotence cataracts glaucoma infection implied wound healing leukocytosis myopathy osteoporosis
45
what drug increase metabolism of corticosteroids and decreases their effectiveness
rifampin
46
corticosteroids may impair immunologic response to
vaccines in some patient populations
47
what Amy increase corticosteroid clearance
estrogen therapy
48
concurrent use of what may increase the possibility of peptic ulcers
NSAIDs
49
what drugs may decrease clearance of corticosteroids
ketoconazole macrolide CPY450 3A4 inhibitors
50
what should be monitored on corticosteroids
weight gain edema increased BP abnormal electrolytes blood glucose infection