HESI LPN
Pharmacology HESI 2023
1. A client diagnosed with seizures is prescribed phenytoin. Which medication instruction should the practical nurse (PN) reinforce to this client?
- A. Maintain consistent sodium intake.
- B. Use sunscreen when outdoors.
- C. Return for monthly urinalysis.
- D. Brush and floss teeth daily.
Correct answer: D
Rationale: The correct answer is to reinforce the instruction to brush and floss teeth daily. Phenytoin therapy can lead to gingival hyperplasia (gum disease), which can be prevented by maintaining good oral hygiene practices such as brushing and flossing daily. Choices A, B, and C are incorrect because they are not directly related to the side effects or management of phenytoin therapy. Maintaining consistent sodium intake is not a specific concern with phenytoin. Using sunscreen when outdoors is important to prevent sunburn but is not directly related to phenytoin therapy. Returning for monthly urinalysis may be necessary for other medications, but it is not specifically required for monitoring phenytoin therapy.
2. The nurse is studying antacids that contain magnesium and calcium for the pharmacology exam. The student nurse remembers that these antacids should be used with caution in patients with which condition?
- A. Hypertension
- B. Renal failure
- C. Heart failure
- D. Peptic ulcer disease
Correct answer: B
Rationale: Magnesium and calcium can accumulate in patients with renal failure, leading to toxicity.
3. A client with a diagnosis of generalized anxiety disorder is prescribed citalopram. The nurse should instruct the client that this medication may have which potential side effect?
- A. Nausea
- B. Drowsiness
- C. Insomnia
- D. Headache
Correct answer: A
Rationale: The correct potential side effect of citalopram is nausea. Citalopram can cause gastrointestinal disturbances such as nausea, so clients should be advised to take the medication with food if nausea occurs to help minimize this side effect. While other side effects like drowsiness, insomnia, and headache may also occur with citalopram, nausea is a common side effect that clients should be informed about. Drowsiness and insomnia are more commonly associated with other medications used to treat anxiety or depression, such as benzodiazepines or certain antidepressants. Headache is a less common side effect of citalopram compared to nausea.
4. A client with chronic kidney disease is prescribed lanthanum carbonate. The nurse should monitor for which potential side effect?
- A. Hypercalcemia
- B. Hypocalcemia
- C. Hyperkalemia
- D. Hypokalemia
Correct answer: A
Rationale: Lanthanum carbonate is prescribed in chronic kidney disease to bind dietary phosphorus in the gastrointestinal tract. This action can lead to decreased phosphorus absorption and potential hypercalcemia due to the increased serum calcium levels. Therefore, the nurse should monitor the client for signs and symptoms of hypercalcemia, such as confusion, fatigue, and muscle weakness. Choices B, C, and D are incorrect as lanthanum carbonate's mechanism of action does not lead to hypocalcemia, hyperkalemia, or hypokalemia.
5. A practical nurse is reviewing the medication administration record for a client prescribed prednisone. What potential side effect should the nurse monitor for?
- A. Hypoglycemia
- B. Weight loss
- C. Hypertension
- D. Diarrhea
Correct answer: C
Rationale: Prednisone, a corticosteroid, can cause side effects such as hypertension, fluid retention, and weight gain. Hypertension is a common side effect of prednisone due to its impact on sodium and fluid retention in the body. Monitoring blood pressure is crucial to detect and manage hypertension in clients taking prednisone. Choices A, B, and D are incorrect. While prednisone can indirectly affect blood glucose levels, hypoglycemia is not a common side effect. Weight gain, not weight loss, is more prevalent with prednisone use. Diarrhea is not a typical side effect associated with prednisone.
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