ATI RN
ATI Pharmacology Proctored Exam
1. A provider prescribes phenobarbital for a client who has a seizure disorder. The medication has a long half-life of 4 days. How many times per day should the nurse expect to administer this medication?
- A. One
- B. Two
- C. Three
- D. Four
Correct answer: A
Rationale: Phenobarbital has a long half-life of 4 days, meaning it remains at therapeutic levels in the body for an extended period. Due to this prolonged duration of action, the nurse should expect to administer phenobarbital once a day to maintain therapeutic levels and effectiveness. Administering it more than once a day would lead to unnecessary dosing and potential adverse effects as the medication remains active in the body for an extended period.
2. A client prescribed Warfarin is receiving discharge instructions from a nurse. Which of the following dietary instructions should the nurse include?
- A. Increase your intake of leafy green vegetables.
- B. Avoid foods high in vitamin K.
- C. Increase your intake of dairy products.
- D. Avoid foods high in iron.
Correct answer: B
Rationale: The correct answer is B: 'Avoid foods high in vitamin K.' Vitamin K can interfere with the effectiveness of Warfarin, an anticoagulant medication. Foods high in vitamin K, such as leafy green vegetables, can reduce the medication's anticoagulant effect. Therefore, clients taking Warfarin should be advised to avoid or consume a consistent amount of foods high in vitamin K to maintain the medication's effectiveness. Choices A, C, and D are incorrect because increasing leafy green vegetables, dairy products, or avoiding foods high in iron are not directly related to the interaction with Warfarin.
3. A client in a long-term care facility has Hypothyroidism and a new prescription for Levothyroxine. Which of the following dosage schedules should the nurse expect for this client?
- A. The client will start at a high dose, and the dose will be tapered as needed.
- B. The client will remain on the initial dosage during the course of treatment.
- C. The client's dosage will be adjusted daily based on blood levels.
- D. The client will start on a low dose, which will be gradually increased.
Correct answer: D
Rationale: The nurse should expect that levothyroxine will be started at a low dose and gradually increased over several weeks. This cautious approach is crucial, especially in older adult clients, to prevent toxicity and ensure optimal therapeutic outcomes for managing hypothyroidism. Choice A is incorrect because starting at a high dose and tapering as needed is not the standard approach for levothyroxine. Choice B is incorrect because the initial dosage is typically adjusted to reach the optimal therapeutic dose. Choice C is incorrect as adjusting the dosage daily based on blood levels is not necessary for levothyroxine, as it has a long half-life and requires time to reach a steady state.
4. A healthcare professional is preparing to administer a dose of Hydromorphone IV to a client. Which of the following actions should the healthcare professional take?
- A. Administer the medication over 5 minutes.
- B. Administer a dose of Naloxone prior to giving the Hydromorphone.
- C. Assess the client's blood pressure prior to administration.
- D. Inject the medication into the client's subcutaneous tissue.
Correct answer: A
Rationale: The healthcare professional should administer IV Hydromorphone slowly over 5 minutes to reduce the risk of hypotension and respiratory depression. Rapid administration can lead to adverse effects due to its potency. Choice B is incorrect because Naloxone is used as an antidote for opioid overdose, not routinely administered with Hydromorphone. Choice C is important but not specific to the administration of Hydromorphone. Choice D is incorrect as Hydromorphone is intended for intravenous use, not subcutaneous injection.
5. A client has a prescription for hydrochlorothiazide to treat hypertension. The nurse should monitor the client for which of the following adverse effects?
- A. Hypokalemia
- B. Hypertension
- C. Hyperglycemia
- D. Hypercalcemia
Correct answer: A
Rationale: Hydrochlorothiazide is a diuretic that can cause potassium loss, leading to hypokalemia. Monitoring potassium levels is crucial to prevent potential adverse effects such as cardiac arrhythmias and muscle weakness.
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