HESI LPN
Pharmacology HESI Practice
1. A client with angina pectoris has been prescribed nitroglycerin tablets prn for chest pain. Which statement by the client causes the practical nurse (PN) to clarify instructions for this client?
- A. I will take one tablet every 5 minutes, up to three tablets.
- B. I should take one tablet at the onset of angina and stop activity.
- C. I need to replace nitroglycerin tablets every 3 to 6 months to maintain freshness.
- D. I should ensure that I chew the pill completely before swallowing it.
Correct answer: D
Rationale: Nitroglycerin tablets should be taken at the onset of angina, and the client should stop activity and rest. One tablet should be placed under the tongue (sublingually), not chewed or swallowed. One tablet can be taken every 5 minutes, up to three doses. If pain relief not achieved after taking three pills, seek medical attention immediately. Nitroglycerin should be replaced every 3 to 6 months. Nitroglycerin pain relief should occur in 5 minutes and duration should last 30 minutes.
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 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.
4. A client undergoing hemodialysis for chronic kidney disease is taking the medication erythropoietin. The nurse should reinforce instructions to explain for which reason this medication is prescribed?
- A. This drug prevents infections associated with dialysis.
- B. This drug prevents deep vein thrombosis in older clients.
- C. This drug helps stimulate the production of red blood cells.
- D. This drug helps balance the level of phosphorus in the body.
Correct answer: C
Rationale: Erythropoietin is prescribed to stimulate the production of red blood cells. Clients undergoing hemodialysis often develop anemia due to end-stage renal disease. Erythropoietin helps correct this anemia by stimulating red blood cell production. It is not used to prevent infections associated with dialysis, prevent deep vein thrombosis, or balance phosphorus levels in the body.
5. A client with a history of heart failure is prescribed carvedilol. The nurse should monitor for which potential side effect?
- A. Bradycardia
- B. Tachycardia
- C. Hypertension
- D. Hyperglycemia
Correct answer: A
Rationale: When a client is prescribed carvedilol, the nurse should monitor for bradycardia, a potential side effect of this medication. Carvedilol is a beta-blocker that can slow down the heart rate, so monitoring for signs of bradycardia is essential to prevent any adverse effects on the client's cardiovascular system. Tachycardia (Choice B) is less likely to occur with carvedilol since it primarily works to reduce heart rate. Hypertension (Choice C) and hyperglycemia (Choice D) are not common side effects associated with carvedilol.
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