Nursing Elites

1. Tamoxifen is prescribed for the client with metastatic breast carcinoma. The nurse understands that the primary action of this medication is to:

• A. Increase DNA and RNA synthesis.
• B. Promote the biosynthesis of nucleic acids.
• C. Increase estrogen concentration and estrogen response.
• D. Compete with estradiol for binding to estrogen in tissues containing high concentrations of receptors.

Correct answer: D

Rationale: The primary action of tamoxifen, an antineoplastic medication used in metastatic breast carcinoma, is to compete with estradiol for binding to estrogen receptors in tissues with high receptor concentrations. By doing so, tamoxifen reduces DNA synthesis and estrogen response, leading to its therapeutic effect in inhibiting the growth of estrogen-sensitive breast cancer cells.

2. A client with diabetes mellitus is prescribed Humulin NPH insulin. The client asks the nurse how to store unopened vials of insulin. The nurse instructs the client to:

• A. Freeze the insulin.
• B. Refrigerate the insulin.
• C. Store the insulin in a dark, dry place.
• D. Keep the insulin at room temperature.

Correct answer: B

Rationale: Unopened vials of insulin should be stored in the refrigerator until needed. Freezing insulin can damage it, affecting its efficacy. Storing insulin in a dark, dry place or at room temperature is not recommended as it can lead to degradation of the insulin. Refrigeration helps maintain the stability and effectiveness of insulin.

3. When reviewing laboratory results for a client receiving tacrolimus (Prograf), which laboratory result would indicate to the nurse that the client is experiencing an adverse effect of the medication?

• A. Blood glucose of 200 mg/dL
• B. Potassium level of 3.8 mEq/L
• C. Platelet count of 300,000 cells/mm³
• D. White blood cell count of 6000 cells/mm³

Correct answer: A

Rationale: An elevated blood glucose level of 200 mg/dL indicates an adverse effect of tacrolimus. This finding suggests hyperglycemia, which is a known adverse effect of the medication. Other potential adverse effects of tacrolimus include neurotoxicity and hypertension. Monitoring blood glucose levels is crucial to detect and manage this adverse effect promptly. Choices B, C, and D are not directly associated with adverse effects of tacrolimus. Potassium, platelet count, and white blood cell count are important parameters to monitor for other reasons but not specifically for detecting adverse effects of tacrolimus.

4. A client who has been newly diagnosed with diabetes mellitus has been stabilized with daily insulin injections. Which information should the nurse teach when carrying out plans for discharge?

• A. Keep insulin vials refrigerated at all times.
• B. Rotate the insulin injection sites systematically.
• C. Increase the amount of insulin before unusual exercise.
• D. Monitor the urine acetone level to determine the insulin dosage.

Correct answer: B

Rationale: When a client is stabilized with daily insulin injections, it is crucial to rotate the injection sites systematically. This practice helps prevent the development of lipodystrophy, which can affect insulin absorption and lead to inconsistent glucose control. Additionally, rotating sites minimizes discomfort and tissue damage, ensuring optimal insulin delivery and effectiveness.

5. Sildenafil (Viagra) is prescribed to treat a client with erectile dysfunction. A nurse reviews the client's medical record and would question the prescription if which of the following is noted in the client's history?

• A. Neuralgia
• B. Insomnia
• C. Use of nitroglycerin
• D. Use of multivitamins

Correct answer: C

Rationale: The correct answer is C. Sildenafil (Viagra) enhances the vasodilating effect of nitric oxide and is contraindicated with the concurrent use of organic nitrates and nitroglycerin. Using nitroglycerin together with Viagra can lead to severe hypotension and cardiovascular collapse, making it unsafe to combine both medications.

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