HESI RN
Pharmacology HESI Quizlet
1. The client with a gastric ulcer has a prescription for sucralfate (Carafate), 1 g by mouth four times daily. The nurse schedules the medication for which times?
- A. With meals and at bedtime
- B. Every 6 hours around the clock
- C. One hour after meals and at bedtime
- D. One hour before meals and at bedtime
Correct answer: D
Rationale: Sucralfate is a gastric protectant that forms a protective coating over the ulcer. Administering sucralfate 1 hour before meals and at bedtime is important to create a barrier that protects the ulcer from gastric acid and mechanical irritation. This timing allows sucralfate to effectively coat the ulcer site and provide the desired therapeutic effect, enhancing its efficacy in promoting ulcer healing and symptom relief.
2. Why is prostaglandin E1 prescribed for a child with transposition of the great arteries?
- A. Prevents hypercyanotic (blue or tet) spells
- B. Maintains an adequate hormone level
- C. Maintains the position of the great arteries
- D. Provides adequate oxygen saturation and maintains cardiac output
Correct answer: D
Rationale: Prostaglandin E1 is prescribed for a child with transposition of the great arteries to increase blood mixing, which helps maintain adequate oxygen saturation and cardiac output. This medication does not prevent hypercyanotic spells, maintain hormone levels, or influence the position of the great arteries.
3. Mycophenolate mofetil (CellCept) is prescribed for a client as prophylaxis for organ rejection following an allogeneic renal transplant. Which of the following instructions does the nurse reinforce regarding administration of this medication?
- A. Administer on an empty stomach.
- B. Take the medication with a calcium-type antacid.
- C. Open the capsule and mix with food for administration.
- D. Contact the health care provider (HCP) if a sore throat occurs.
Correct answer: D
Rationale: The correct instruction for administering mycophenolate mofetil (CellCept) is to contact the healthcare provider (HCP) if unusual bleeding or bruising, sore throat, or other adverse effects occur. It is essential not to open or crush the capsules to maintain the medication's efficacy.
4. 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.
5. A client is receiving dietary instructions from a nurse regarding warfarin sodium (Coumadin) therapy. The nurse advises the client to avoid which food item?
- A. Grapes
- B. Spinach
- C. Watermelon
- D. Cottage cheese
Correct answer: B
Rationale: The correct answer is B: Spinach. Spinach is high in vitamin K, which antagonizes the effects of warfarin sodium, an anticoagulant medication. Clients taking warfarin should avoid consuming foods rich in vitamin K, like spinach, to maintain the medication's effectiveness. Grapes (choice A), watermelon (choice C), and cottage cheese (choice D) do not interfere with the effects of warfarin, so they are safe for the client to consume while on warfarin therapy.
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