HESI LPN
Pharmacology HESI 55 Questions 2023
1. 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.
2. A client who received a prescription for cyclosporine ophthalmic emulsion for dry eyes asks the practical nurse (PN) if it is safe to continue using artificial tears. What information should the PN provide?
- A. Avoid using artificial tears because they decrease the efficacy of cyclosporine.
- B. Discontinue the use of both products if transient blurring occurs after administration.
- C. Allow a 15-minute interval between the administration of cyclosporine and artificial tears.
- D. Discontinue the use of cyclosporine and artificial tears when tear production reaches a normal level.
Correct answer: C
Rationale: The correct answer is to allow a 15-minute interval between the administration of cyclosporine and artificial tears. Cyclosporine, an ophthalmic emulsion that increases tear production, can be used in conjunction with artificial tears as long as the products are administered 15 minutes apart. This interval helps to prevent any potential interactions between the two products and ensures optimal effectiveness of cyclosporine for treating dry eyes.
3. A client with a diagnosis of generalized anxiety disorder is prescribed escitalopram. 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 potential side effect of escitalopram is drowsiness. Escitalopram is known to cause sedation, so clients should be advised to avoid activities that require mental alertness, such as driving, until they know how the medication affects them. Dry mouth, nausea, and headache are also common side effects of various medications but are not specifically associated with escitalopram.
4. A client with hypertension is prescribed clonidine. The nurse should monitor for which potential side effect?
- A. Bradycardia
- B. Tachycardia
- C. Dizziness
- D. Hyperglycemia
Correct answer: A
Rationale: When a client is prescribed clonidine, the nurse should monitor for bradycardia as a potential side effect. Clonidine can lead to a decrease in heart rate, thus causing bradycardia. Monitoring the client's heart rate is crucial to detect and manage this adverse effect.
5. What class of laxative would the nurse recommend to a patient asking about the best way to prevent constipation?
- A. Stimulant laxatives
- B. Bulk-forming laxatives
- C. Emollient laxatives
- D. Hyperosmotic laxatives
Correct answer: B
Rationale: The correct answer is B: Bulk-forming laxatives. These laxatives are recommended to prevent constipation because they work by absorbing liquid in the intestines, forming a bulky, soft stool that is easier to pass. They are safe and considered the most natural option. Stimulant laxatives (choice A) work by promoting bowel movements through intestinal contractions and are more suitable for treating occasional constipation rather than preventing it. Emollient laxatives (choice C) soften the stool by increasing the incorporation of water into the feces and are more suitable for patients who need to avoid straining during defecation. Hyperosmotic laxatives (choice D) work by drawing water into the intestine through osmosis and are typically used for more severe cases of constipation, not for prevention.
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