HESI LPN
Pharmacology HESI 55 Questions 2023
1. A practical nurse (PN) is reviewing teaching with the client and/or significant others about the concurrent use of benztropine and olanzapine to manage psychotic behavior. What information should the PN reinforce?
- A. Benztropine will reduce olanzapine's side effect of urinary retention.
- B. Benztropine potentiates the effect of olanzapine.
- C. Benztropine is used to control the side effects of olanzapine.
- D. The combined effect of these drugs will modify psychotic behavior.
Correct answer: C
Rationale: The correct answer is C because benztropine, an anticholinergic drug, is used to control extrapyramidal symptoms associated with olanzapine use. Choice A is incorrect because benztropine does not directly reduce olanzapine's side effect of urinary retention. Choice B is incorrect as benztropine does not potentiate the effect of olanzapine; its main role is to counteract extrapyramidal symptoms. Choice D is incorrect because the primary purpose of using benztropine alongside olanzapine is to manage side effects, not specifically to modify psychotic behavior.
2. When should a client receiving insulin lispro administer this medication?
- A. Before meals
- B. After meals
- C. At bedtime
- D. Before sleep
Correct answer: A
Rationale: Insulin lispro is a rapid-acting insulin that should be administered shortly before meals. This timing helps to synchronize the peak action of insulin with the rise in blood glucose levels after eating, effectively managing blood glucose levels in the body.
3. A client with a diagnosis of schizophrenia is prescribed ziprasidone. The nurse should monitor the client for which potential side effect?
- A. QT prolongation
- B. Weight gain
- C. Dry mouth
- D. Increased appetite
Correct answer: A
Rationale: The correct answer is A: QT prolongation. Ziprasidone is known to cause QT prolongation, which can potentially lead to serious cardiac issues. Monitoring the client's ECG is crucial to detect any changes and prevent adverse effects related to QT interval prolongation. Choices B, C, and D are incorrect because weight gain, dry mouth, and increased appetite are not commonly associated with ziprasidone. While weight gain can be a side effect of some antipsychotic medications, it is not a prominent side effect of ziprasidone. Dry mouth and increased appetite are also not typically linked to ziprasidone use.
4. A 43-year-old female client who has had a thyroidectomy due to Grave's disease is prescribed a thyroid replacement hormone. Which signs and symptoms are associated with thyroid hormone toxicity and should be reported promptly to the healthcare provider?
- A. Tinnitus and dizziness
- B. Tachycardia and chest pain
- C. Dry skin and intolerance to cold
- D. Weight gain and increased appetite
Correct answer: B
Rationale: The correct answer is B: Tachycardia and chest pain. Signs and symptoms of thyroid hormone toxicity, especially in cases of excessive dosage, include tachycardia (rapid heart rate) and chest pain. These symptoms are consistent with hyperthyroidism, where the body is receiving an excessive amount of thyroid hormone. It is crucial to report these symptoms promptly to the healthcare provider to adjust the medication dosage and prevent potential complications. Choices A, C, and D are not indicative of thyroid hormone toxicity. Tinnitus and dizziness (Choice A) are not typical symptoms of thyroid hormone toxicity. Dry skin and intolerance to cold (Choice C) are more common in hypothyroidism, while weight gain and increased appetite (Choice D) are associated with hypothyroidism as well, not thyroid hormone toxicity.
5. During a home visit, a client with a history of angina reports frequent headaches. The client recently started a new prescription for diltiazem, a calcium channel blocker. What action should the nurse take?
- A. Explain the importance of obtaining a blood sample promptly to test for medication toxicity
- B. Consult with the healthcare provider regarding the necessity of an opioid analgesic for pain relief
- C. Recommend the client to discontinue the medication until contacting the healthcare provider
- D. Instruct the client on the use of acetaminophen every 4-6 hours as needed for headaches
Correct answer: D
Rationale: The correct action for the nurse to take is to instruct the client to use acetaminophen for headaches. Acetaminophen is a suitable and safer option for managing headaches associated with calcium channel blockers like diltiazem. It is essential to avoid medications that can interact negatively with diltiazem, such as opioid analgesics. Discontinuing the medication abruptly without consulting the healthcare provider is not recommended. Monitoring for medication toxicity through blood samples is not typically indicated for managing headaches in this scenario.
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