Endocrine Drugs

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Last updated 1:07 AM on 3/20/23
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105 Terms

1
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What controls the pituitary gland?
Hypothalamus
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Anterior Pituitary Gland
Synthesizes and secrete hormones
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Posterior Pituitary Gland
Stores and releases hormones synthesized in hypothalamus
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Anterior Pituitary Hormones
\-Adrenocorticotropic Hormone (ACTH)

\-Growth Hormone (GH)

\-Thyroid-stimulating hormone (TSH)
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Posterior Pituitary Hormone
Antidiuretic Hormone (ADH)
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Drug Therapy
\-Replaces a deficient hormone

\-Diagnostic aid

\-Augment/antagonize natural effects of pituitary hormones
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Is Somatropin released from the anterior or posterior gland?
Anterior
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Somatropin is a ____ mimetic
Growth Hormone
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What does Somatropin do?
Promote linear growth in children lacking endogenous GH
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Somatropin Administration
SQ 6-7 days per week
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Somatropin Adverse Effects
\-Edema

\-Headache

\-Increased risk of T2 DM (cause hyperglycemia)
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Acromegaly is caused by…
Excessive growth hormone (pituitary tumor)
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Acromegaly Clinical Manifestations
\-Starts in adulthood

\-Enlarged nose, ears, hands and feet

\-Deep voice, thick/oily skin, joint pain, increased sweating, vision problems, HA, organ enlargement

\-Impaired glucose tolerance
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Octreotide is a ____ analog
Somatostatin

\-Mimics GH inhibiting hormone
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Octreotide Indications
\-Acromegaly

\-Carcinoid Tumors

\-Acute upper GI bleed of unknown origin
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When should Octreotide dose be reduced?
\-Older adults

\-Hepatic/renal failure
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Octreotide Adverse Effects
\-CNS

\-GI

\-Cardiac

\-Respiratory

\-Musculoskeletal

\-Impaired glucose regulation
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Diabetes Insipidus
Damage to pituitary gland leads to lack of ADH
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Diabetes Insipidus Clinical Manifestations
\-Polyuria

\-Polydipsia

\-Hypernatremia

\-Water looks like urine
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Diabetes Insipidus Usual Treatment
Desmopressin
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Where is Desmopressin released from?
Posterior pituitary
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Desmopressin is ___ mimetic
ADH
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Desmopressin Indications
\-DI

\-Hemophilia A

\-Von Willebrand Disease

\-Nocturia

\-Nocturnal Emesis
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Desmopressin Black Box Warning
Hyponatremia
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The Thyroid secretes….
\-Thyroxine (T4)

\-Triidothyronine (T3)

\-Calcitonin
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Thyroid hormones are produced by…
Coupling iodide and tyrosine
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Thyroid Hormones Primary Deficiency
Thyroid Gland
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Thyroid Hormones Secondary Deficiency
Pituitary Gland (TSH)
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Hypothyroidism
\-Congenital is caused by lack of iodine in mother’s diet

\-Myxedema

\-Goiters
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Myxedema
Hypothyroidism occurring after childhood
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Myxedema Coma
Severe life-threatening hypothyroidism
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Goiters
Visible enlargement of thyroid gland

\-Caused by overstimulation of thyroid gland
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Hypothyroidism Treatment
Levothyroxine
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Levothyroxine MOA
\-Induce changes in the cellular rate

\-Stimulate CV system

\-Diuretic effect
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Levothyroxine is in what pregnancy category?
A
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Is Levothyroxine dosed in Mg or Mcg?
Mcg
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Is Levothyroxine lifelong therapy?
Yes, with routine monitoring
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Is Levothyroxine chemically pure?
Yes
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Levothyroxine Adverse Effects
S/S of hyperthyroidism
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Levothyroxine should be used in caution with…
\-Older adults

\-Existing heart disease
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Hypothyroidism ___ things ___
slows: down
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Hyperthyroidism ____ things ____
speeds; up
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Hypothyroidism Cardiovascular Effects
\-Increased capillary fragility

\-Decreased CO

\-Decreased BP

\-Decreased HR

\-Cardiac enlargement

\-Anemia

\-Rapid development of atherosclerosis
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Hyperthyroidism Cardiovascular Effects
\-Increased CO

\-Increased systolic/decreased diastolic BP

\-Increased HR

\-Cardiac dysrhythmias

\-Increased blood volume
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Hypothyroidism Central Nervous System Effects
\-Lethargy

\-Emotional dullness

\-Slow speech, slurring, hoarseness

\-Hypoactive reflexes

\-Forgetfulness, mental sluggishness

\-Excessive drowsiness and sleeping
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Hyperthyroidism Central Nervous System Effects
\-Nervousness

\-Emotional instability

\-Restlessness

\-Hyperactive reflexes

\-Anxiety

\-Insomnia
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Hypothyroidism Metabolic Effects
\-Cold intolerance

\-Subnormal temperature

\-Increased cholesterol

\-Weight gain
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Hyperthyroidism Metabolic Effects
\-Heat intolerance

\-Low-grade fever

\-Weight loss/increased appetite
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Hypothyroidism GI Effects
\-Decreased appetite

\-Constipation
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Hyperthyroidism GI Effects
\-Increased appetite

\-Abdominal cramps

\-N/V/D
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Hypothyroidism Muscular Effects
\-Weakness

\-Fatigue

\-Vague aches and pains
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Hyperthyroidism Muscular Effects
\-Weakness

\-Fatigue

\-Muscle atrophy and tremors
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Hypothyroidism Integumentary Effects
\-Dry, course, and thick skin

\-Puffy face and eyelids

\-Dry and thinned hair

\-Dry, thick, and brittle nails
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Hyperthyroidism Integumentary Effects
\-Moist, warm and flushed skin

\-Increased sweating

\-Localized edema around eyelids

\-Soft hair and nails
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Hypothyroidism Reproductive Effects
\-Prolonged menstrual periods

\-Infertility or sterility

\-Decreased libido
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Hyperthyroidism Reproductive Effects
Absent or infrequent menstrual periods
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Hypothyroidism Miscellaneous Effects
Increased

\-Susceptibility to infection

\-Sensitivity to narcotics, barbiturates and anesthetics due to slowed metabolism
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Hyperthyroidism Miscellaneous Effects
\-Increased susceptibility to infection

\-SOB

\-Hoarse, rapid speech

\-Polyuria

\-Excessive perspiration
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Hyperthyroidism is…
Excessive thyroid hormones
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Hyperthyroidism Causes…
\-Graves’ disease

\-Thyroiditis

\-Over treatment with thyroid drugs
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Hyperthyroidism Treatment
\-Radioactive iodine (destroys thyroid gland to prevent hyper secretion of thyroid hormones)

\-Surgical thyroidectomy

\-Antithyroid medication
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Propylthiouracil (PTU) MOA
\-Inhibit coupling of iodine and tyrosine

\-Impedes formation of thyroid hormone

\-Can’t inactivate already active thyroid hormone
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Propylthiouracil (PTU) Black Box Warning
Hepatotoxicity
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Propylthiouracil (PTU) Long Term Use Effects
\-Euthyroid

\-Hypothyroid state
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Propylthiouracil (PTU) Adverse Effects
S/S of hypothyroidism
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Propylthiouracil (PTU) Children/Pregnancy
\-Category D

\-Should not be used in children
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When should Levothyroxine be taken?
First thing in the morning at the same time
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Should Levothyroxine be taken with or without food?
Without-always on an empty stomach
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Levothyroxine Brands should never…
Be changed without prescriber authorization
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Levothyroxine should be used in caution in patients with…
DM

\-Worsens glycemic control
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Propylthiouracil Should be Take…
Around the clock in evenly divided doses
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Should Propylthiouracil be taken with or without food?
Either but it should be consistent

\-Better tolerated WITH food
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Propylthiouracil Can Cause…
Bleeding and bone marrow suppression
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In addition to monitoring the thyroid, what else should be monitored in patient taking Propylthiouracil?
Liver function
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What foods should be avoided in patient taking Propylthiouracil?
High in tyrosine
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Corticosteroids are regulated by the…
HPA axis
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Corticosteroids include…
\-Mineralocorticoids

\-Glucocorticoids

\-Sex hormones
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The medulla produces…
Catecholamines

\-Epinephrine

\-Norepinephrine
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Circadian Rhythm
24 hour period
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Circadian Rhythm While Sleeping
Hypothalamus releases corticotropin releasing hormone (CRH)
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Circadian Rhythm In the Morning
\-Pituitary releases adrenocorticotropic hormone (ACTH)

\-Adrenal cortex releases corticosteroids
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Cosyntropin is released from the…
Anterior pituitary
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Cosyntropin is ____ mimetic
ACTH
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What is Cosyntropin used for?
Adrenocortical insufficiency

Diagnostics
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Cushing Syndrome is caused by…
Hyper secretion of adrenocortical hormones
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Cushing Syndrome S/S
\-Round face

\-Buffalo hump

\-Virilization

\-Ecchymoses

\-Weak muscles

\-Weight gain

\-Thin arms/legs

\-Stretch marks
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Cushing Syndrome Complications
\-Osteoporosis

\-Fractures

\-Elevated blood glucose

\-Glucose intolerance

\-Peptic ulcers

\-Blood clots

\-Mood changes

\-High BP

\-High cholesterol

\-Memory issues
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Cushing Syndrome Nursing Care
Monitor

\-Electrolytes

\-Blood glucose

\-Vital signs
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Addison’s Disease is caused by…
\-Under secret of adrenocortical hormones

\-Destruction of the adrenal cortex
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Addison’s Disease S/S
\-Hyponatremia

\-Hypoglycemia

\-Hyperkalemia

\-Dehydration

\-Weight loss

\-Weakness

\-Fatigue

\-Lethargy

\-Nausea

\-Vomiting
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Secondary Adrenocortical Insufficiency
\-Removal of pituitary gland

\-Abrupt withdrawal of oral glucocorticoids
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Glucocorticoids
\-Affect metabolism of carbs, fats and proteins

\-Anti-inflammatory

\-Maintains BP

\-Stress Response

\-Best given in the AM

\-Chronic use can lead to HPA axis suppression and increased infection risk
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Mineralocorticoids
\-Primarily aldosterone

\-Regulate electrolyte and water balance

(Increase resorption of water/sodium and excretion of potassium)
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Glucocorticoids Indications
\-Allergic/Hypersensitivity Reactions

\-Skin disorders

\-Endocrine disorders

\-GI disorders

\-Some cancers

\-Neurologic conditions

\-Renal and hepatic disorders with edema

\-Respiratory disorders

\-Rheumatic disorders
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Glucocorticoids Contraindications
Avoid in

\-Active infections

\-Other immunosuppressants

\-Live vaccines

Caution in

\-Gastritis, reflect disease, ulcer disease

\-DM

\-Cardiac, renal, or liver dysfunction
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Glucocorticoids Adverse Effects
\-Increased appetite

\-Altered sleep cycles

\-Hyperglycemia

\-Psychosis

\-Prolonged treatment causes adrenal suppression

\-Osteoporosis

\-Fragile skin

\-Hair loss
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Prednisone: Glucocorticoids
\-ORAL

\-Most common

\-Anti-inflamm and immunosuppressive

\-Treat acute respiratory illness

\-Can not manage Addisons
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Methylprednisolone: Glucocorticoids
\-IV form

\-Not in neonates

\-Acute issues
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Hydrocortisone: Glucocorticoids
\-Topically

\-Anti-inflammatory and itching
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Dexamethasone: Glucocorticoids
Cerebral Edema