HESI RN
Pharmacology HESI
1. A healthcare professional prepares to reinforce instructions to a client who is taking allopurinol (Zyloprim). The healthcare professional plans to include which of the following in the instructions?
- A. Instruct the client to drink 3000 mL of fluid per day.
- B. Instruct the client to take the medication with food.
- C. Inform the client that the effect of the medication will occur immediately.
- D. Instruct the client that, if swelling of the lips occurs, this is a normal expected response.
Correct answer: A
Rationale: Allopurinol is an antigout medication that works by reducing the production of uric acid in the body. To prevent kidney stones and promote the excretion of uric acid, increased fluid intake is essential. Instructing the client to drink 3000 mL of fluid per day helps to reduce the risk of kidney stones and assists in the elimination of uric acid, thereby enhancing the effectiveness of allopurinol therapy.
2. Mafenide acetate (Sulfamylon) is prescribed for a client with a burn injury. When applying the medication, the client complains of local discomfort and burning. Which of the following is the most appropriate nursing action?
- A. Notifying the registered nurse
- B. Discontinuing the medication
- C. Informing the client that this is normal
- D. Applying a thinner film than prescribed to the burn site
Correct answer: C
Rationale: The correct action is to inform the client that local discomfort and burning are normal reactions to Mafenide acetate. This medication is used to treat burns by reducing bacteria in avascular tissues. Discontinuing the medication or applying a thinner film than prescribed is not necessary or recommended in this situation.
3. 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.
4. When a client is taking lansoprazole (Prevacid), which question should the nurse ask during data collection to determine medication effectiveness?
- A. Has your appetite increased?
- B. Are you experiencing any heartburn?
- C. Do you have any problems with vision?
- D. Do you experience any leg pain when walking?
Correct answer: B
Rationale: When a client is taking lansoprazole (Prevacid), a gastric acid pump inhibitor used to treat gastroesophageal reflux disease (GERD), the nurse should ask if the client is experiencing any heartburn to determine medication effectiveness. Heartburn is a common symptom of GERD, and the reduction of heartburn indicates the effectiveness of lansoprazole in managing acid reflux symptoms. Choices A, C, and D are not relevant to assessing the effectiveness of lansoprazole for GERD.
5. The client with a gastric ulcer has a prescription for sucralfate (Carafate), 1 g by mouth four times daily. The nurse schedules the medication for which times?
- A. With meals and at bedtime
- B. Every 6 hours around the clock
- C. One hour after meals and at bedtime
- D. One hour before meals and at bedtime
Correct answer: D
Rationale: Sucralfate is a gastric protectant that forms a protective coating over the ulcer. Administering sucralfate 1 hour before meals and at bedtime is important to create a barrier that protects the ulcer from gastric acid and mechanical irritation. This timing allows sucralfate to effectively coat the ulcer site and provide the desired therapeutic effect, enhancing its efficacy in promoting ulcer healing and symptom relief.
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