HESI LPN
Pharmacology HESI Practice
1. How does omeprazole work in treating a peptic ulcer?
- A. Increasing the production of gastric acid
- B. Neutralizing stomach acid
- C. Coating the stomach lining
- D. Reducing gastric acid secretion
Correct answer: D
Rationale: Omeprazole is a proton pump inhibitor that works by reducing gastric acid secretion. By inhibiting the enzyme responsible for pumping acid into the stomach, omeprazole helps decrease the acidity level in the stomach, providing relief from peptic ulcers. Option A is incorrect because omeprazole does not increase gastric acid production; instead, it decreases it. Option B is incorrect as omeprazole does not neutralize existing stomach acid but rather reduces its secretion. Option C is incorrect as omeprazole does not coat the stomach lining but acts on reducing acid secretion.
2. A client with a diagnosis of schizophrenia is prescribed clozapine. The nurse should monitor the client for which potential side effect?
- A. Agranulocytosis
- B. Dry mouth
- C. Weight gain
- D. Hypersalivation
Correct answer: A
Rationale: The correct answer is Agranulocytosis. Clozapine is known to potentially cause agranulocytosis, a serious condition characterized by a dangerously low white blood cell count. Monitoring white blood cell counts is crucial to detect this side effect early and prevent complications. Choices B, C, and D are incorrect because dry mouth, weight gain, and hypersalivation are not typically associated with clozapine use. While dry mouth can be a common side effect of some antipsychotic medications, it is not specifically linked to clozapine. Weight gain can occur with certain antipsychotics, but clozapine is more commonly associated with metabolic side effects. Hypersalivation is not a common side effect of clozapine.
3. A client with hypertension is prescribed valsartan. The nurse should monitor the client for which potential side effect?
- A. Hypotension
- B. Tachycardia
- C. Hyperglycemia
- D. Hyponatremia
Correct answer: A
Rationale: The correct answer is A: Hypotension. Valsartan is an angiotensin II receptor blocker that can cause hypotension as a side effect by dilating blood vessels. Monitoring blood pressure is crucial to prevent complications related to low blood pressure. Choice B, Tachycardia, is incorrect because valsartan typically does not cause an increase in heart rate. Choice C, Hyperglycemia, is not a common side effect of valsartan. Choice D, Hyponatremia, is also unlikely with valsartan use.
4. A client who is recovering from an appendectomy is receiving narcotics. Earlier, the nurse witnessed the client's family pushing the pain pump. What should the nurse implement?
- A. Check the client's level of consciousness
- B. Instruct the family not to push the button
- C. Stop the client's basal infusion
- D. Administer a narcotic reversal medication
Correct answer: B
Rationale: Instructing the family not to push the button is necessary to prevent the client from receiving an excessive amount of narcotics, ensuring the safe and appropriate use of the pain pump. Checking the client's level of consciousness may not address the issue of family members pushing the button. Stopping the client's basal infusion is not indicated unless there are specific medical reasons for doing so. Administering a narcotic reversal medication is not necessary at this point as the issue lies with inappropriate use rather than an overdose.
5. A client with rheumatoid arthritis is prescribed methotrexate. The nurse should include which instruction in the client's teaching plan?
- A. Avoid alcohol while taking this medication.
- B. Take this medication with food to decrease gastrointestinal upset.
- C. Avoid sunlight while taking this medication.
- D. Report any signs of infection to the healthcare provider.
Correct answer: C
Rationale: The correct instruction for a client prescribed methotrexate is to avoid sunlight while taking this medication. Methotrexate can increase sensitivity to sunlight, leading to skin reactions. It is essential for clients to limit sun exposure and use protective measures like sunscreen and clothing coverage to prevent adverse effects. Choices A, B, and D are incorrect because avoiding alcohol, taking with food, and reporting signs of infection are not specific instructions related to methotrexate therapy.
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