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Pharmacology · chapter 26 · Hypothalamus, Pituitary, and Adrenal Disorder Drugs

Growth Hormones and Suppressants

The 14 things this section of the textbook says that you are most likely to be asked about — quoted word for word, not retold. Then 6 practice questions with the reasoning.

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Key points

  1. How growth hormone works

    Growth hormone stimulates the production of the insulin-like growth factor-1 (IGF-1) in the liver, which promotes the growth of bone, muscle, and other tissues. Growth hormone also helps to regulate metabolism and break down fats.
  2. Too little or too much growth hormone

    Deficiencies in growth hormone can lead to stunted growth, delayed puberty, and other health issues. Conversely, excessive growth hormone production can result in abnormal growth of bones and soft tissues, causing gigantism in children or acromegaly in adults.
  3. What somatropin treats

    Somatropin (different from somatotropin mentioned above) is a recombinant growth hormone that is used to treat failure to grow due to growth hormone deficiency in pediatric and adult clients; some forms of this prescription are indicated in the treatment of Prader-Willi syndrome.
  4. Somatropin raises blood glucose

    Drug interactions include glucocorticoids, which may oppose the growth-promoting effects of somatropin; oral estrogen, which impacts growth hormone secretion; and insulin or oral diabetes drugs, which may need dosages altered due to somatropin increasing glucose levels in the blood.
  5. Somatropin contraindications

    Somatropin is contraindicated in clients who are critically ill or have active malignancy, impaired glucose tolerance or diabetes, hypersensitivity, or closed epiphyses.
  6. What suppressants treat

    Growth hormone suppressants are medications used to reduce the production or activity of growth hormone in the body. These drugs are typically used to treat medical conditions such as acromegaly or gigantism.
  7. Bromocriptine uses

    It also is used to treat clients with acromegaly or those with high levels of prolactin, which can cause a lack of menstrual periods and infertility.
  8. Bromocriptine contraindications

    This drug is contraindicated in clients with uncontrolled hypertension, hypersensitivity, and pregnancy.
  9. Pegvisomant adverse effects

    Adverse reactions include infection, pain, nausea, diarrhea, abnormal liver tests, flu-like symptoms, and injection site reactions. Pegvisomant is contraindicated in clients with diabetes or hypoglycemia, liver toxicity, or hypersensitivity.
  10. Liver and kidney disease

    These drugs are metabolized by the liver and can cause further hepatic impairment in clients with liver disease, and because they are excreted in the urine, they can cause further renal insufficiency in clients with kidney disease.
  11. Labs to monitor

    Monitor IGF-1 levels and liver function, and report abnormalities to the health care provider. Monitor for thyroid suppression and elevated glucose levels and notify the health care provider of abnormalities.
  12. Choosing the injection site

    If injectable: Choose injection site (thigh, abdomen, or buttock) as recommended by their health care provider, avoiding areas that are bony, bruised, sore, red, scarred, or hard.
  13. Report fluid retention

    Report symptoms of fluid retention, including swelling in legs and feet, weight gain, and shortness of breath, or other symptoms such as constipation, fatigue, dry skin, increased thirst, polyuria, blurred vision, muscle pain, and/or tingling in hands and feet to their health care provider because these may represent an adverse reaction to the drug.
  14. Do not stop on your own

    From the book’s list of what the client should not do:

    Stop taking the drug unless directed by the health care provider because this drug class replaces or suppresses the body’s growth hormone.

Terms to know

Growth hormone
Growth hormone, also known as somatotropin or human growth hormone, is essential for the body’s growth and development.
Bromocriptine mesylate
Bromocriptine mesylate is a dopamine receptor agonist. This grown hormone suppressant stimulates the dopamine receptors in the brain and helps to reduce prolactin production as well as lessen symptoms of Parkinson’s disease.

Practice questions

Stuck on select-all-that-apply? How to take them one option at a time.

The graded version needs JavaScript. Every question is below anyway, with the answer and why.

Every question here, with the answer

  1. A child with growth hormone deficiency is prescribed somatropin. X-rays show closed epiphyses. What should the nurse do?

    1. Give the first dose as ordered.
    2. Question the order because closed epiphyses are a contraindication.
    3. Give the drug orally instead of by injection.
    4. Double the dose to speed growth.

    Answer: Question the order because closed epiphyses are a contraindication.

    Somatropin is contraindicated in clients with closed epiphyses, as well as in critical illness, active malignancy, diabetes, and hypersensitivity. Changing the route or dose does not remove a contraindication.

  2. A client with type 2 diabetes is starting somatropin. What should the nurse anticipate?

    1. The diabetes drug dose may need to be changed because somatropin increases blood glucose.
    2. Blood glucose will drop, so insulin should be stopped.
    3. The client should stop checking glucose.
    4. Somatropin has no effect on glucose.

    Answer: The diabetes drug dose may need to be changed because somatropin increases blood glucose.

    Insulin or oral diabetes drugs may need dosage changes because somatropin increases blood glucose. The other options contradict this interaction.

  3. A client is learning to self-inject a growth hormone suppressant. Which instructions are correct? Select all that apply.

    1. Avoid areas that are bruised, red, scarred, or hard.
    2. Use the thigh, abdomen, or buttock as recommended.
    3. Clean the site with alcohol and let it dry for 30 seconds.
    4. Dispose of needles in an FDA-approved sharps container.
    5. Reuse needles to save money.

    Answer: Avoid areas that are bruised, red, scarred, or hard., Use the thigh, abdomen, or buttock as recommended., Clean the site with alcohol and let it dry for 30 seconds., Dispose of needles in an FDA-approved sharps container.

    The client chooses the thigh, abdomen, or buttock, avoids damaged areas, cleans and lets the site dry, and uses a sharps container. Needles must not be reused.

  4. A client taking bromocriptine for acromegaly tells the nurse she plans to become pregnant. What should the nurse do?

    1. Tell her pregnancy has no effect on this drug.
    2. Advise her to speak with the provider, because pregnancy is a contraindication.
    3. Suggest doubling the dose before conception.
    4. Tell her to stop the drug immediately without telling the provider.

    Answer: Advise her to speak with the provider, because pregnancy is a contraindication.

    Bromocriptine is contraindicated in pregnancy, and clients should talk to their provider before becoming pregnant because these drugs can affect the fetus. Stopping on one's own is discouraged because the drugs replace or suppress growth hormone.

  5. A nurse is monitoring a client on a growth hormone suppressant. Which should be monitored and reported if abnormal? Select all that apply.

    1. Hearing
    2. IGF-1 levels
    3. Blood glucose
    4. Thyroid function
    5. Liver function

    Answer: IGF-1 levels, Blood glucose, Thyroid function, Liver function

    The nurse monitors IGF-1 levels and liver function and watches for thyroid suppression and elevated glucose. Hearing is not a listed assessment.

  6. A client with severe liver disease is being considered for a growth hormone suppressant. Why is this a concern?

    1. These drugs are metabolized by the liver and can worsen hepatic impairment.
    2. Liver disease increases growth hormone.
    3. The liver is not involved in these drugs.
    4. These drugs improve liver function.

    Answer: These drugs are metabolized by the liver and can worsen hepatic impairment.

    Growth hormone suppressants are metabolized by the liver and can cause further hepatic impairment, so severe liver disease is a contraindication. The other statements are not supported.

Where every quote comes from

Section 26.2 Growth Hormones and Suppressants of Pharmacology for Nurses by Tina Barbour-Taylor, Leah Mueller (Sabato), Donna Paris, Dorie Weaver, OpenStax, 2024. Read the whole section free at openstax.org.

The textbook is licensed under CC BY-NC-SA 4.0. This page quotes it word for word and adds the headings, the order and the practice questions; references to the book's figures and stray spaces left by its formatting are removed. The page is shared under the same licence. Nothing here is sold.