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 generalized anxiety disorder is prescribed paroxetine. The nurse should instruct the client that this medication may have which potential side effect?
- A. Drowsiness
- B. Dry mouth
- C. Nausea
- D. Headache
Correct answer: A
Rationale: The correct answer is A: Drowsiness. Paroxetine, used for generalized anxiety disorder, can cause drowsiness. Clients should be advised not to drive or operate heavy machinery until they know how the medication affects them. Dry mouth, nausea, and headache are potential side effects of other medications but are not commonly associated with paroxetine. Drowsiness is a common side effect for paroxetine and can impact a client's ability to perform tasks that require alertness.
3. A client with a diagnosis of generalized anxiety disorder is prescribed lorazepam. The client should be informed that this medication may have which potential side effect?
- A. Drowsiness
- B. Dry mouth
- C. Nausea
- D. Headache
Correct answer: A
Rationale: The correct answer is A: Drowsiness. Lorazepam, a medication commonly used to treat anxiety disorders, can lead to drowsiness as a common side effect. It is important for clients to be aware of this potential effect, and they should be advised to avoid activities like driving until they understand how the medication affects them. Dry mouth, nausea, and headache are possible side effects of other medications but are less commonly associated with lorazepam.
4. A client is taking levodopa-carbidopa for Parkinson's disease. The nurse should include which instruction when educating the client about this medication?
- A. Increase fluid intake to prevent dehydration.
- B. Take medication with food to improve absorption.
- C. Take medication at bedtime to avoid daytime drowsiness.
- D. It can cause nausea and dizziness.
Correct answer: A
Rationale: The correct instruction for a client taking levodopa-carbidopa for Parkinson's disease is to increase fluid intake to prevent dehydration. Levodopa-carbidopa should be taken with food to reduce gastrointestinal upset and improve absorption. Taking medication at bedtime is not necessary to avoid daytime drowsiness. It is crucial to prevent dehydration due to the medication's side effects. Choice B is incorrect because the medication should be taken with food, not at bedtime. Choice C is incorrect as taking the medication with food, rather than on an empty stomach, aids in absorption and reduces gastrointestinal side effects. Choice D is incorrect as it states the side effects of the medication rather than providing specific instructions on its administration.
5. A client with epilepsy is prescribed lamotrigine. The nurse should monitor for which potential side effect?
- A. Drowsiness
- B. Nausea and vomiting
- C. Skin rash
- D. Dizziness
Correct answer: C
Rationale: When a client is prescribed lamotrigine, the nurse should closely monitor for the potential side effect of skin rash. Lamotrigine is known to cause skin rashes, which can be mild or severe, indicating a serious adverse reaction like Stevens-Johnson syndrome. Monitoring for skin rash is crucial to detect any signs of severe allergic reactions early and prevent further complications. Choices A, B, and D are incorrect as drowsiness, nausea and vomiting, and dizziness are not typically associated with lamotrigine use. While dizziness can be a side effect of some antiepileptic medications, it is not a common side effect of lamotrigine.
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