WorksheetsPharm - Endocrine
Total questions: 159
Worksheet time: 2hrs 32mins
Which medication would be appropriate for a pregnant women in her first trimester? [Jett lecture]
PTU
MMI
RAI
Which statement is true about medications used to treat hyperthyroidism? [Jett lecture]
PTU is 10 times more potent than MMI
RAI is not likely to induce hypothyroidism
MMI has a potential to cause hepatotoxicity
Which is a good treatment option to inhibit signs and symptoms of hyperthyroidism such as anxiety and tremor? [Jett lecture] ***
PTU
MMI
RAI
Propranolol
Which is true regarding treatment options for hypothyroidism? [Jett lecture]
Levothyroxine (Synthroid) should be taken with meals
Liothyronine (Cytomel) is often used alone
Natural Thyroid Hormone (Armour Thyroid) is not recommended first line for hypothyroidism
Which medication used for hypothyroidism is considered the drug of choice for pregnancy? [Jett lecture]
Natural Thyroid Hormone (Armour thyroid)
Liothyronine (Cytomel)
Levothyroxine (Synthroid)
Beta-Blockers (Propranolol)
Hyperthyroidism goals of therapy
Minimize symptoms and long-term complications
Eliminate excess hormone
Restore normal hormone concentrations
Prevent neurologic deficits in newborns and children
First line therapy in children, adolescents, and pregnancy
Antithyroid medications
Surgery
Beta-blockers
Thioamides
Propylthiouracil (PTU)
Methimazole (MMI)
Radioactive iodine (RAI)
Propranolol
Thioamides
Levels at/near baseline within 4-8 weeks, should begin taper at this time
Levels at/near baseline within 12-24 months, should begin taper at this time
Continuation of therapy for 12-24 months to induce remission
Continuation of therapy for 4-8 weeks to induce remission
Remission rates average 40-50%, follow up every 6-12 months after remission
DOC in 1st trimester of pregnancy ***
PTU
MMI
RAI
Propranolol
Administer at the same time each day ***
PTU
MMI
RAI
Propranolol
DOC in neonates, children, and 2nd and 3rd trimesters of pregnancy ***
PTU
MMI
RAI
Propranolol
_____ 10 times more potent than ____
PTU ; MMI
MMI ; PTU
Minor adverse effects of Thioamide
Benign transient leukopenia; WBC <4000/mm3
GI intolerance
Rash
Fever
Arthralgias
Major adverse effects of Thioamide
Agranulocytosis
Hepatotoxicity
Nephrotoxicity
Anaphylaxis
Boxed Warning: Severe liver injury and acute liver failure resulting in death and transplantation
PTU
MMI
RAI
Propranolol
MOA: Disrupts hormone synthesis -- Destroys overactive follicular cells
PTU
MMI
RAI
Propranolol
Maximal effect in 3-6 months
-60% of patient become euthyroid
-May repeat in 6 months if hyperthyroid
PTU
MMI
RAI
Propranolol
Contraindicated in pregnancy
PTU
MMI
RAI
Propranolol
Permanent hypothyroidism almost inevitable
PTU
MMI
RAI
Propranolol
Relieve symptoms (palpitations, tremor, anxiety, heat intolerance) ***
PTU
MMI
RAI
Propranolol
MOA: Blocks the response to B-adrenergic stimulation -- Partially prevents conversion of T4 to T3
PTU
MMI
RAI
Propranolol
Place in therapy ***
-Adjunct to anti-thyroid medications
-Thyroid storm
PTU
MMI
RAI
Propranolol
AE: N/V, bradycardia, light-headedness
PTU
MMI
RAI
Propranolol
Caution in asthma/COPD (vasoconstriction in lungs) and diabetes (masks signs of hypoglycemia)
PTU
MMI
RAI
Propranolol
Most invasive option, but also effective
Antithyroid medications
Surgery
Beta-blockers
-Option for patients who refuse RAI
-Consider for patients with a large thyroid gland or who have failed to obtain remission on antithyroid medications
Antithyroid medications
Surgery
Beta-blockers
Preparation for thyroidectomy:
Thioamide 6-8 weeks prior to induce euthyroid state
Iodides for 10-14 days to reduce vascularity
Propranolol for several weeks pre-operatively and 7-10 days post-operatively
Thioamide 10-14 days prior to induce euthyroid state
Iodides for 6-8 weeks to reduce vascularity
Complications of surgery:
Hypothyroidism in 49% of patients
Vocal cord abnormalities
Increased rate of stillbirths
Lower psychological scores in infants
Thyroid storm goals of treatment
Minimize symptoms and long-term complications
Eliminate excess hormone
Supportive measures
Inhibit thyroid hormone synthesis and release
Thyroid storm treatment
High doses of PTU and iodide
Beta-blocker
Corticosteroids
Low doses of PTU and iodide
NSAIDS or aspirin
NO NSAIDS or aspirin in thryoid storm treatment
True
False
Hypothyroidism: Goals of therapy
Restore normal hormone concentrations
Provide symptomatic relief
Prevent neurologic deficits in newborns and children
Reverse biochemical abnormalities of hypothyroidism
Eliminate excess hormone
Hyperthyroidism: Treatment options
Antithyroid medications
Surgery
Beta blockers
Synthetic hormone
Natural thyroid hormone
Hypothyroidism: Treatment options
Antithyroid medications
Surgery
Beta blockers
Synthetic hormone
Natural thyroid hormone
Synthetic Hormones
Liothyronine (Cytomel, Triostat)
Levothyroxine/liothyronine (Liotrix)
Levothyroxine (Synthroid, Levoxyl)
Dessicated thyroid (Armour Thyroid, Nature-Throid)
Natural Thyroid Hormone
Liothyronine (Cytomel, Triostat)
Levothyroxine/liothyronine (Liotrix)
Levothyroxine (Synthroid, Levoxyl)
Dessicated thyroid (Armour Thyroid, Nature-Throid)
Synthetic T3 hormone, usually in combination with synthetic T4
Liothyronine (Cytomel, Triostat)
Levothyroxine/liothyronine (Liotrix)
Levothyroxine (Synthroid, Levoxyl)
Dessicated thyroid (Armour Thyroid, Nature-Throid)
Higher incidence of cardiac side effects
Liothyronine (Cytomel, Triostat)
Levothyroxine/liothyronine (Liotrix)
Levothyroxine (Synthroid, Levoxyl)
Dessicated thyroid (Armour Thyroid, Nature-Throid)
Combination synthetic T4 / T3
Liothyronine (Cytomel, Triostat)
Levothyroxine/liothyronine (Liotrix)
Levothyroxine (Synthroid, Levoxyl)
Dessicated thyroid (Armour Thyroid, Nature-Throid)
Synthetic T4 hormone
Liothyronine (Cytomel, Triostat)
Levothyroxine/liothyronine (Liotrix)
Levothyroxine (Synthroid, Levoxyl)
Dessicated thyroid (Armour Thyroid, Nature-Throid)
Drug of choice for thyroid hormone replacement
Liothyronine (Cytomel, Triostat)
Levothyroxine/liothyronine (Liotrix)
Levothyroxine (Synthroid, Levoxyl)
Dessicated thyroid (Armour Thyroid, Nature-Throid)
Levothyroxine (Synthroid, Levoxyl)
Take on an empty stomach
Take with meals
Levothyroxine (Synthroid, Levoxyl): adverse effects (related to excessive dosing)
Restlessness
Insomnia
Osteoporosis
Tachycardia
Bradycardia
Not 1st line
Liothyronine (Cytomel, Triostat)
Levothyroxine/liothyronine (Liotrix)
Levothyroxine (Synthroid, Levoxyl)
Dessicated thyroid (Armour Thyroid, Nature-Throid)
Derived from hog, beef, or sheep thyroid
Liothyronine (Cytomel, Triostat)
Levothyroxine/liothyronine (Liotrix)
Levothyroxine (Synthroid, Levoxyl)
Dessicated thyroid (Armour Thyroid, Nature-Throid)
Complications of hypothyroidism and pregnancy
Hypothyroidism in 49% of patients
Vocal cord abnormalities
Increased rate of stillbirths
Lower psychological scores in infants
Hypothyroidism and Pregnancy: Thyroid hormone necessary for fetal growth
True
False
Hypothyroidism and Pregnancy : _______ is drug of choice
Liothyronine (Cytomel, Triostat)
Levothyroxine/liothyronine (Liotrix)
Levothyroxine (Synthroid, Levoxyl)
Dessicated thyroid (Armour Thyroid, Nature-Throid)
Myxedema Coma initial treatment
IV levothyroxine bolus
IV liothyronine bolus
IV levothyroxine/liothyronine bolus
IV armour thyroid bolus
Myxedema Coma treatment (after inital treatment)
Maintenance doses of IV (levothryoxine bolus) until patient stable
IV hydrocortisone
Supportive care
Beta blocker
High doses of PTU and iodide
Growth Hormone is controlled by two hormones from the
hypothalamus
pituitary
adrenal
thyroid
Increases growth hormone secretion.
Growth hormone-releasing hormone (GHRH)
Somatostatin
Inhibits growth hormone
Growth hormone-releasing hormone (GHRH)
Somatostatin
Growth Hormone: hormone of the _____ pituitary
anterior
posterior
Somatotrophs are cells of the ______ pituitary that secrete somatotropin (or GH)
anterior
posterior
IGF-1 effects in muscle
anabolic effects
catabolic effects
increase in muscle mass
decrease in muscle mass
IGF-1 effects in adipose cells
anabolic effects
catabolic effects
reduction in adiposity
production in adiposity
Lack of growth hormone results in
dwarfism
acromegaly
gigantism
Excess growth hormone in children results in __________ (because bone growth plates have not fused)
dwarfism
acromegaly
gigantism
Excess growth hormone in adults results in ________ -- thickening of the bones and soft tissues.
dwarfism
acromegaly
gigantism
has a half-life of approximately 20 minutes and is predominantly cleared by the liver.
Circulating endogenous GH
Recombinant human GH (rhGH)
is administered subcutaneously 6–7 times per week. Peak levels occur in 2–4 hours and active blood levels persist for approximately 36 hours.
Circulating endogenous GH
Recombinant human GH (rhGH)
is rapidly cleared from the circulation, with a half-life of 1–3 minutes. The kidney appears to play an important role in its metabolism and excretion.
Somatostatin
Octerotide
The plasma elimination half-life is about 80 minutes
Somatostatin
Octerotide
Which of the following is indicated (first-line) for growth failure in pediatric patients with Turner syndrome? [Riggs quiz]
Octreotide
Pegvisomant
Mecasermin
Somatotropin
Which of the following is a growth hormone antagonist? [Riggs quiz]
Pegvisomant
Octreotide
Somatotropin
Somatostatin
Somatropes are found in which endocrine gland? [Riggs quiz]
Pituitary
Adrenal Glands
Thyroid
Hypothalamus
Treatment with recombinant growth hormone failes to elevate IGF-1 in a pediatric patient with idiopathic short stature. What drug is indicated? [Riggs quiz]
Somatotropin
Mecasermin
Octreotide
Pegvisomant
Which of the following would be the best drug to stop growth hormone secretion from a pituitary adenoma in a 27-year-old female? [Riggs quiz]
Octreotide
Pegvisomant
Stomatotropin
Mecasermin
Recombinant Growth Hormone
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
Recombinant IGF
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
Somatostatin analog
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
GH antagonist
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
MOA: Has two GH receptor binding sites --> One site on the drug has increased affinity to the GH receptor and One site has a mutation that blocks receptor dimerization and generation of the phosphorylating signal.
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
Indications: acromegaly
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
MOA: “acts like” endogenous somatostatin
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
Adverse effects: increases in liver enzymes without liver failure have been reported; does not inhibit GH secretion and may lead to increased GH levels and possible adenoma growth.
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
Indicated in Cushing disease and acromegaly
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
Why is Pasireotide indicated in Cushing disease?
Inhibits ACTH
Inhibits GH and IGF-1
Why is Pasireotide indicated in acromegaly?
Inhibits ACTH
Inhibits GH and IGF-1
Indications: reduces symptoms caused by a variety of hormone-secreting tumors: acromegaly, carcinoid syndrome, gastrinoma, glucagonoma, insulinoma, VIPoma, and ACTH-secreting tumor
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
Octerotide other uses include:
secretory diarrhea
HIV associated
portal hypertension
useful for acute control of esophageal varices
patients with short bowel syndrome who are dependent on total parenteral nutrition (TPN)
Adverse Effects: Nausea, vomiting, abdominal cramps, flatulence, and steatorrhea with bulky bowel movements.
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
Metabolism: extensively hepatic
Somatostatin
Octerotide
Mecasermin adverse side effect ***
hypoglycemia (IGF-1 has the opposite effect on blood glucose than GH)
hyperglycemia (IGF-1 has the same effect on blood glucose than GH)
Patients are instructed to consume a carbohydrate meal or snack 20 min before or after administration.
Patients are instructed to have an empty stomach before administration.
Indicated in growth hormone deficiency that does not respond to somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
Treatment is contraindicated in a patient with a known active malignancy.
Somatotropin
Mecasermin
Octerotide
Pasireotide
Pegvisomant
Somatropin adverse reactions occur less frequently in ______ vs ______
children ; adults
adults ; children
Growth Hormone other uses include:
useful for acute control of esophageal varices
builds muscle mass and endurance (banned by the International Olympic Committee)
dairy cattle to increase milk production
wasting in patients with AIDS
patients with short bowel syndrome who are dependent on total parenteral nutrition (TPN)
Somatropin Indications
Idiopathic Short Stature
Prader-Willi syndrome
Turner syndrome
Noonan syndrome
Marfan syndrome
Somatotropin Indications in Children
Inadequate endogenous GH secretion
Growth failure caused by disorder other than GH deficiency
Hormone-secreting tumors
Growth failure due to severe IGF-1 deficiency that is not responsive to exogenous GH
Somatotropin pharmacodynamics
GH binds cell surface receptors & activates signaling cascades
Has two GH receptor binding sites
Somatotropin
Humatrope
Genotropin
Nutropin
Mecasermin
Pegvisomant
Calcitonin helps ***
DECREASE calcium
INCREASE calcium
PTH helps ***
DECREASE calcium
INCREASE calcium
____ releases calcitonin
thyroid
parathyroid
adrenal
pituitary
Osteoporotic Fractures --> Principal sites for fractures: ***
hip
wrist
spine
pelvis
sacrum
_____ fractures account for ~75% of fracture costs and are associated with greatest morbidity
hip
wrist
spine
gold standard for diagnosis (osteoporosis) ***
DEXA scan
FRAX tool
amount of bone compared with a young adult of same gender with peak bone mass → used for diagnosis
T-score
Z-score
amount of bone compared with people in same age group or same size and gender → not used for diagnosis *adjusted for race/ethnicity
T-score
Z-score
T-score: -1 and above ***
Normal
Osteopenia
Osteoporosis
Severe Osteoporosis
T-score: -1 to -2.5 ***
Normal
Osteopenia
Osteoporosis
Severe Osteoporosis
T-score: Less than -2.5 ***
Normal
Osteopenia
Osteoporosis
Severe Osteoporosis
T-score: Less than -2.5 w/ fractures ***
Normal
Osteopenia
Osteoporosis
Severe Osteoporosis
Inhibit bone resorption ***
Antiresorptive
Anabolic
Stimulate Bone Formation ***
Antiresorptive
Anabolic
Antiresorptive ***
Calcium & Vitamin D
Bisphosphonates
Recombinant Parathyroid Hormone
PTH-Related Protein
Sclerostin Inhibitor
Anabolic ***
Calcium & Vitamin D
Bisphosphonates
Recombinant Parathyroid Hormone
PTH-Related Protein
Sclerostin Inhibitor
Antiresportive ***
RANKL Inhibitor
Selective Estrogen-Receptor Modulators
Tissue-Selective Estrogen Complex
Calcitonin
Estrogen/Hormone Therapy
Carbonate ***
Elemental calcium: 40%
Elemental calcium: 20%
Citrate ***
Elemental calcium: 40%
Elemental calcium: 20%
Calcium causes _______, carbonate is the worst for it. ***
constipation
diarrhea
When to consider prescription therapy?
Osteoporosis
Osteopenia
High risk
Alendronate (Fosamax®, Fosamax® plus D, Binosto®) administration ***
First thing in the morning with 8 oz water, avoid food/drink and remain upright for 30 minutes
First thing in morning with 8 oz water, avoid food/drink and remain upright for 60 minutes
Take immediately after breakfast with 4 oz water, avoid food/drink and remain upright for 30 minutes
will see this drug in two different settings: osteoporosis and breast cancer prevention ***
Raloxifene
Denosumab
Zolendronic Acid
Duavee
MOA: selectively binds to estrogen receptors (SERM)
Raloxifene
Duavee
Denosumab
MOA: tissue-selective estrogen complex that is estrogen therapy plus estrogen agonist/antagonist
Raloxifene
Duavee
Denosumab
MOA: fully human monoclonal antibody that inhibits RANKL and therefore prevents maturation of osteoclasts
Raloxifene
Duavee
Denosumab
MOA: decrease osteoclast maturation and lifespan therefore decreasing the rate of bone resorption
Bisphosphonates
Calcitonin
Estrogen/Hormone Therapy
MOA: reduces osteoclasts and increases osteoblast activity
Bisphosphonates
Calcitonin
Estrogen/Hormone Therapy
MOA: bind to osteoblasts to increase activity and decrease osteoclast activity
Bisphosphonates
Calcitonin
Estrogen/Hormone Therapy
Calcitonin dosage ***
Nasal Spray
SQ
IM
IV
no longer in the guidelines for treatment of osteoporosis ***
Bisphosphonates
Calcitonin
Estrogen/Hormone Therapy
MOA: recombinant human parathyroid hormone that increases bone formation, bone remodeling rate, and osteoblast number/activity
Teriparatide
Abaloparatide
Romosozumab
MOA: human parathyroid hormone analog that stimulates osteoblast function and increased bone mass
Teriparatide
Abaloparatide
Romosozumab
MOA: sclerostin inhibitor, a regulatory factor in bone metabolism that inhibits signaling pathways resulting in bone growth
Teriparatide
Abaloparatide
Romosozumab
Treatment for Anaphylaxis
Epinephrine
Spironolactone
Fludrocortisone (Florinef)
Ketoconazole (Nisoral)
Pheochromocytoma treatment
Laparoscopic surgical excision of the tumor (with adjunctive radiopharmaceutical agents or chemotherapy)
Alpha- and beta-adrenergic blockers for hypertension
surgery for adenoma
administration of aldosterone receptor antagonists (spironolactone)
Hypoaldosteronism treatment
Epinephrine
Spironolactone
Fludrocortisone (Florinef)
Ketoconazole (Nisoral)
MOA: Stimulates alpha-, beta1-, and beta2-adrenergic receptors
Epinephrine
Spironolactone
Fludrocortisone (Florinef)
Ketoconazole (Nisoral)
Epinephrine results in:
relaxation of bronchial smooth muscle
cardiac stimulation
cardiac depression
constriction of bronchial smooth muscle
Hyperaldosteronism clinical manifestations
hypertension
hypotension
hypoalkemia (renal potassium wasting)
hyperalkemia
neuromuscular manifestations
Hyperaldosternoism treatment
Laparoscopic surgical excision of the tumor (with adjunctive radiopharmaceutical agents or chemotherapy)
surgery for adenoma
administration of aldosterone receptor antagonists (spironolactone)
management of hypertension and hypokalemia
Hyperaldosternoism evaluation ***
serum sodium & serum potassium is normal or elevated
serum sodium & serum potassium is suppressed
urinary potassium is elevated
urinary potassium is suppressed
ORAL SALT LOADING results
If aldosterone is still elevated, then primary aldosteronism
If aldosterone decreases, then negative test
If aldosterone is still elevated, then negative test
If aldosterone decreases, then primary aldosteronism
FLUDROCORTISONE SUPPRESSION TEST results
Negative: aldosterone levels lower due to neg feedback mech: no hyperaldosteronism
Positive: aldosterone remains high; indicates hyperaldosteronism
Negative: aldosterone remains high; indicates hyperaldosteronism
Positive: aldosterone levels lower due to neg feedback mech: no hyperaldosteronism
(potassium sparing diuretic) with the goal of excreting more sodium, retaining potassium and lowering blood pressure
Epinephrine
Spironolactone
Fludrocortisone (Florinef)
Ketoconazole (Nisoral)
Potent mineralocorticoid and potent glucocorticoid
Epinephrine
Spironolactone
Fludrocortisone (Florinef)
Ketoconazole (Nisoral)
Usually administered in conjunction with a glucocorticoid to achieve total replacement therapy in primary adrenocortical insufficiency. (Addison’s disease, congenital adrenal hyperplasia)
Epinephrine
Spironolactone
Fludrocortisone (Florinef)
Ketoconazole (Nisoral)
Adverses Effects of long-term steroid therapy of mineralocorticoids
sodium and water retention
loss of potassium
gain of potassium
Adrenal enzyme inhibitor
Epinephrine
Spironolactone
Fludrocortisone (Florinef)
Ketoconazole (Nisoral)
Hypercortisolism of Cushing’s syndrome
is primarily treated surgically
requires medical therapy
Hypercortisolism of Cushing’s syndrome: When surgery is delayed, contraindicated, or unsuccessful, medical therapy is required
Epinephrine
Spironolactone
Fludrocortisone (Florinef)
Ketoconazole (Nisoral)
Drug interactions with glucocorticoids ***
Insulin
Oral hypoglycemics
Beta blockers
Warfarin
Glucocorticoids: Clinical Indications for replacement therapy
adrenal cortical insufficiency
multiple sclerosis
inflammatory disorders
management of leukemia and lymphomas
autoimmune disorders
in two or three divided doses at the lowest dose that relieves symptoms *natural, not synthetic
Hydrocortisone
Prednisone
Dexamethasone
daily; provide smoother physiological effect; may be useful in noncompliant patients
Hydrocortisone
Prednisone
Dexamethasone
Slight alterations in structure results in higher affinity for the GR compare to naturally occurring steroids. Longer duration of action.
Hydrocortisone
Prednisone
Dexamethasone
Hydrocortisone
Natural, short-acting glucocorticoids
Synthetic/Long-acting glucocorticoids
Duration of action (hours): 24-36
Duration of action (hours): 48-72
Duration of action (hours): 12-24
Prednisone
Natural, short-acting glucocorticoids
Synthetic/Long-acting glucocorticoids
Synthetic intermediate-acting
Duration of action (hours): 24-36
Duration of action (hours): 48-72
Dexamethasone
Natural, short-acting glucocorticoids
Synthetic/Long-acting glucocorticoids
Synthetic intermediate-acting
Duration of action (hours): 24-36
Duration of action (hours): 48-72
Adverse effects of long-term steroid therapy of glucocorticoids
Increased gluconeogenesis
Increased protein catabolism
Decreased gluconeogenesis
Decreased protein catabolism
A solution of alternate-day therapy can be used to reduce or eliminate adverse effects from long-term treatment of
steroids
aldosterone-receptor antagonists
adrenal enzyme inhibitor
ACTH Stimulation Test: results for primary adrenal insufficiency
no change in cortisol
rise in cortisol
ACTH Stimulation Test: results for secondary adrenal insufficiency
no change in cortisol
rise in cortisol
Alternate-day therapy: ________ steroid every other day in the morning
short-acting
long-acting
Alternate-day therapy: on the 2nd day the ______ is release from negative feedback
adrenal gland
thyroid
pituitary
