HESI RN
Pharmacology HESI
1. Phenazopyridine hydrochloride (Pyridium) is prescribed for a client for symptomatic relief of pain resulting from a lower urinary tract infection. The nurse reinforces to the client:
- A. To take the medication after meals
- B. To take the medication before meals
- C. To discontinue the medication if a headache occurs
- D. That a reddish-orange discoloration of the urine may occur
Correct answer: D
Rationale: The nurse should instruct the client that a reddish-orange discoloration of urine may occur. The nurse should also educate the client that this discoloration can stain fabric. It is recommended to take the medication after meals to reduce the possibility of gastrointestinal upset. While a headache is an occasional side effect of the medication, it does not warrant discontinuation of the medication.
2. 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.
3. A home health care nurse is visiting a client with elevated triglyceride levels and a serum cholesterol level of 398 mg/dL. The client is taking cholestyramine (Questran). Which of the following statements, if made by the client, indicates the need for further education?
- A. Constipation and bloating might be a problem.
- B. I'll continue to watch my diet and reduce my fats.
- C. Walking a mile each day will help the whole process.
- D. I'll continue my nicotinic acid from the health food store.
Correct answer: D
Rationale: Nicotinic acid, even an over-the-counter form, should be avoided because it may lead to liver abnormalities. All lipid-lowering medications also can cause liver abnormalities, so a combination of nicotinic acid and cholestyramine resin is to be avoided. Constipation and bloating are the two most common side effects. Walking and the reduction of fats in the diet are therapeutic measures to reduce cholesterol and triglyceride levels.
4. A client who had a kidney transplant is receiving therapy with cyclosporine (Sandimmune). Which statement by the client indicates a need for further instruction?
- A. I need to obtain a yearly influenza vaccine.
- B. I need to have dental checkups every 3 months.
- C. I need to self-monitor my blood pressure at home.
- D. I need to call the health care provider (HCP) if my urine volume decreases or my urine becomes cloudy.
Correct answer: A
Rationale: The correct answer is A. Cyclosporine is an immunosuppressant that can reduce the effectiveness of vaccines. Clients should avoid vaccinations without consulting their health care provider to prevent potential complications or reduced efficacy of the vaccines.
5. The client has reinforced instructions for taking cholestyramine (Questran). Which statement indicates a need for further instructions?
- A. I will continue taking vitamin supplements.
- B. This medication will help lower my cholesterol.
- C. This medication should only be taken with water.
- D. A high-fiber diet is important while taking this medication.
Correct answer: C
Rationale: The correct answer is C because cholestyramine should not only be taken with water. Flavored products or fruit juices can improve the taste. Choices A, B, and D are all correct statements. It is important for the client to continue taking vitamin supplements, understand that cholestyramine helps lower cholesterol, and maintain a high-fiber diet while taking this medication to enhance its effectiveness.
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