HESI RN
HESI Pharmacology Practice Exam
1. A nurse preparing a client for surgery reviews the client's medication record. The client is to be nothing per mouth (NPO) after midnight. Which of the following medications, if noted on the client's record, should the nurse question?
- A. Cyclobenzaprine (Flexeril)
- B. Alendronate (Fosamax)
- C. Allopurinol (Zyloprim)
- D. Prednisone
Correct answer: D
Rationale: Prednisone is a corticosteroid that can cause adrenal atrophy, reducing the body's ability to withstand stress. During surgery, the dosage may need to be adjusted due to its impact on the body's stress response. Choices A, B, and C are not typically contraindicated before surgery and do not have the same potential impact on the body's stress response.
2. A client is prescribed warfarin (Coumadin) for atrial fibrillation. Which statement by the client indicates a need for further teaching?
- A. I will avoid foods high in vitamin K.
- B. I will take the medication at the same time each day.
- C. I will use an electric razor to shave.
- D. I will take aspirin if I have a headache.
Correct answer: D
Rationale: Clients taking warfarin (Coumadin) should avoid aspirin unless prescribed by their healthcare provider, as it can increase the risk of bleeding. The other statements are correct and do not indicate a need for further teaching. Taking aspirin along with warfarin can potentiate the anticoagulant effects of warfarin, leading to an increased risk of bleeding complications.
3. A client with hyperlipidemia is prescribed simvastatin (Zocor). Which instruction should the nurse include in the teaching plan?
- A. Take the medication in the evening.
- B. Report any muscle pain to your healthcare provider.
- C. Avoid increasing your intake of grapefruit juice.
- D. Do not take the medication with a high-fat meal.
Correct answer: B
Rationale: Muscle pain can be a sign of a serious side effect of simvastatin (Zocor) known as rhabdomyolysis and should be reported to the healthcare provider immediately. The medication is usually taken in the evening to coincide with the body's natural production of cholesterol. Grapefruit juice should be avoided as it can increase the risk of toxicity by affecting the metabolism of the medication. Additionally, taking simvastatin with a high-fat meal can reduce its effectiveness, so it should be taken without food or with a light meal.
4. When monitoring a client for acute toxicity associated with bethanechol chloride (Urecholine), what sign should the nurse check for to indicate toxicity?
- A. Dry skin
- B. Dry mouth
- C. Bradycardia
- D. Signs of dehydration
Correct answer: C
Rationale: The correct answer is C: Bradycardia. Toxicity from bethanechol chloride (Urecholine) can lead to excessive muscarinic stimulation, resulting in manifestations like salivation, sweating, involuntary urination and defecation, bradycardia, and severe hypotension. When facing toxicity, treatment involves supportive measures and administering atropine sulfate subcutaneously or intravenously.
5. Before administering furosemide (Lasix) to a client with heart failure, what is the most important laboratory test result for the nurse to check?
- A. Potassium level
- B. Creatinine level
- C. Cholesterol level
- D. Blood urea nitrogen
Correct answer: A
Rationale: The correct answer is to check the potassium level before administering furosemide (Lasix) to a client with heart failure. Furosemide is a loop diuretic that can cause hypokalemia, so it is crucial to assess the potassium level to prevent complications like cardiac arrhythmias associated with low potassium levels.
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