HESI LPN
HESI Practice Test Pharmacology
1. While a client is receiving the medication haloperidol, which client data would indicate to the practical nurse that the medication is therapeutic?
- A. The client has maintained consistent weight loss of 2 pounds per week.
- B. The client has demonstrated a decrease in paranoid behaviors.
- C. The client's blood pressure has remained within normal limits.
- D. The client's fasting blood glucose has remained below 120 mg/dL.
Correct answer: B
Rationale: When a client is taking haloperidol, a therapeutic response involves a decrease in symptoms such as paranoia, hallucinations, delusions, and emotional excitement. These improvements indicate that the medication is effectively managing the client's condition. Monitoring for a reduction in paranoid behaviors helps the practical nurse assess the medication's effectiveness in addressing the client's psychiatric symptoms.
2. A client receiving enalapril reports a persistent dry cough. The nurse should explain that this side effect is related to which medication action?
- A. It reduces the production of angiotensin II.
- B. It increases the production of angiotensin II.
- C. It causes increased production of bradykinin.
- D. It increases the production of aldosterone.
Correct answer: C
Rationale: The correct answer is C. Enalapril, an ACE inhibitor, inhibits the conversion of angiotensin I to angiotensin II, leading to increased levels of bradykinin. The accumulation of bradykinin is responsible for the persistent dry cough associated with ACE inhibitors like enalapril. Choices A, B, and D are incorrect because enalapril does not directly affect the production of angiotensin II or aldosterone. Instead, it primarily impacts the renin-angiotensin-aldosterone system by inhibiting the conversion of angiotensin I to angiotensin II, leading to bradykinin accumulation.
3. A client with diabetes mellitus type 1 is prescribed insulin lispro. When should the nurse instruct the client to administer this medication?
- A. 5-10 minutes before meals
- B. 15 minutes after meals
- C. 30 minutes before meals
- D. 1 hour after meals
Correct answer: A
Rationale: Corrected Rationale: Insulin lispro is a rapid-acting insulin that should be administered 5-10 minutes before meals. This timing helps synchronize the peak action of insulin with the rise in blood glucose levels after eating, effectively managing postprandial hyperglycemia. Choice B, administering 15 minutes after meals, is incorrect because rapid-acting insulins like lispro are meant to act quickly to cover the rise in blood glucose levels after meals. Choices C and D are also incorrect as they do not align with the rapid onset of action required to manage postprandial hyperglycemia in patients with diabetes mellitus type 1.
4. A client is prescribed cyclobenzaprine for muscle spasms. The nurse should instruct the client to avoid which substance while taking this medication?
- A. Alcohol
- B. Caffeine
- C. Nicotine
- D. Dairy products
Correct answer: A
Rationale: The correct answer is A: Alcohol. When taking cyclobenzaprine, it is important to avoid alcohol as it can potentiate the central nervous system depressant effects of the medication. This interaction can lead to increased drowsiness, dizziness, and impaired coordination. Therefore, it is essential for the client to refrain from alcohol consumption while on cyclobenzaprine to prevent these adverse effects and ensure their safety. Choices B, C, and D are incorrect because caffeine, nicotine, and dairy products do not have significant interactions with cyclobenzaprine. While caffeine and nicotine may have stimulant effects that could theoretically counteract some of the sedative effects of cyclobenzaprine, they are not contraindicated. Dairy products, on the other hand, do not interact with cyclobenzaprine and can be consumed safely.
5. A client with hypertension is prescribed hydrochlorothiazide. The nurse should monitor the client for which potential side effect?
- A. Hyperkalemia
- B. Hypokalemia
- C. Hypernatremia
- D. Hyponatremia
Correct answer: B
Rationale: When a client is prescribed hydrochlorothiazide, the nurse should monitor for hypokalemia as a potential side effect. Hydrochlorothiazide is a diuretic that can lead to potassium loss, hence monitoring potassium levels is crucial to prevent complications related to hypokalemia.
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