HESI RN
HESI Pharmacology Practice Exam
1. Nalidixic acid (NegGram) is prescribed for a client with a urinary tract infection. On review of the client's record, the nurse notes that the client is taking warfarin sodium (Coumadin) daily. Which prescription should the nurse anticipate for this client?
- A. Discontinuation of warfarin sodium (Coumadin)
- B. A decrease in the warfarin sodium (Coumadin) dosage
- C. An increase in the warfarin sodium (Coumadin) dosage
- D. A decrease in the usual dose of nalidixic acid (NegGram)
Correct answer: B
Rationale: Nalidixic acid can intensify the effects of oral anticoagulants by displacing these agents from binding sites on plasma proteins. When an oral anticoagulant, like warfarin sodium (Coumadin), is combined with nalidixic acid, a decrease in the anticoagulant dosage may be necessary to avoid excessive anticoagulation and potential bleeding risks. Therefore, the correct action for the nurse to anticipate in this situation is a decrease in the warfarin sodium (Coumadin) dosage. Choice A is incorrect because discontinuing warfarin sodium abruptly can lead to thrombosis or embolism. Choice C is incorrect as increasing the warfarin sodium dosage can potentiate the anticoagulant effect, leading to bleeding complications. Choice D is incorrect as reducing the dose of nalidixic acid would not directly address the interaction with warfarin sodium.
2. A client with Crohn's disease is scheduled to receive an infusion of infliximab (Remicade). The nurse assisting in caring for the client should take which action to monitor the effectiveness of treatment?
- A. Monitoring the leukocyte count for 2 days after the infusion
- B. Checking the frequency and consistency of bowel movements
- C. Checking serum liver enzyme levels before and after the infusion
- D. Carrying out a Hematest on gastric fluids after the infusion is completed
Correct answer: B
Rationale: To monitor the effectiveness of infliximab (Remicade) treatment in a client with Crohn's disease, the nurse should observe the frequency and consistency of bowel movements. Infliximab is an immunomodulator that works to reduce inflammation in the colon, leading to improvements in bowel symptoms such as frequency and consistency. Monitoring these bowel patterns can provide valuable insight into the response to the medication and the overall management of Crohn's disease. Checking the leukocyte count (Choice A) is not specific to monitoring the effectiveness of infliximab for Crohn's disease. Checking serum liver enzyme levels (Choice C) may be important for liver function but does not directly monitor the effectiveness of infliximab. Carrying out a Hematest on gastric fluids (Choice D) is not relevant to monitoring the effectiveness of infliximab in Crohn's disease.
3. A client with diabetes mellitus visits a health care clinic. The client's diabetes mellitus was previously well controlled with daily glyburide (DiaBeta). However, the fasting blood glucose level has recently been in the range of 180 to 200 mg/dL. Which medication, if added to the client's regimen, may have contributed to the hyperglycemia?
- A. Prednisone
- B. Phenelzine (Nardil)
- C. Atenolol (Tenormin)
- D. Allopurinol (Zyloprim)
Correct answer: A
Rationale: Prednisone is known to reduce the effectiveness of oral hypoglycemic medications like glyburide and insulin, which can result in hyperglycemia. Therefore, the addition of prednisone to the client's regimen could have contributed to the elevated fasting blood glucose levels observed.
4. A healthcare provider has written a prescription for ranitidine (Zantac), once daily. When should the nurse schedule the medication?
- A. At bedtime
- B. After lunch
- C. With supper
- D. Before breakfast
Correct answer: A
Rationale: The correct answer is A: At bedtime. Ranitidine should be scheduled at bedtime because it provides a prolonged effect and offers the greatest protection of the gastric mucosa. Administering it at this time helps in managing nocturnal acid breakthrough and providing relief during the night.
5. When administering etanercept (Enbrel) to a client with rheumatoid arthritis for 3 weeks, what is the most important assessment for the nurse to perform?
- A. Assessing the injection site for itching and edema
- B. Monitoring white blood cell counts and platelet counts
- C. Evaluating for fatigue and joint pain in the client
- D. Checking for a metallic taste in the mouth and loss of appetite
Correct answer: B
Rationale: The priority when administering etanercept (Enbrel) to a client with rheumatoid arthritis is to monitor white blood cell counts and platelet counts. Etanercept can lead to infections and pancytopenia, making it crucial to assess for changes in these blood parameters to detect any potential complications early on.
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