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, with a long half-life of 4 days, remains at therapeutic levels in the body for an extended period. Due to this prolonged duration of action, the nurse should administer phenobarbital once a day to maintain a consistent therapeutic effect without the need for multiple daily doses. Administering the medication more than once a day would not be necessary and could increase the risk of side effects or toxicity. Therefore, the correct answer is to administer phenobarbital once a day.
2. When administering IV Acyclovir to a client with Varicella, what action should the nurse take?
- A. Administer a stool softener
- B. Decrease fluid intake following infusion
- C. Infuse Acyclovir over 1 hr
- D. Monitor for hypotension
Correct answer: C
Rationale: When administering IV Acyclovir to a client with Varicella, the nurse should infuse the medication over at least 1 hour to prevent nephrotoxicity. Rapid infusion can lead to adverse effects such as renal damage. Therefore, it is crucial to follow the recommended infusion rate to ensure the client's safety and well-being. Choice A is incorrect as stool softeners are not indicated in this situation. Choice B is incorrect because fluid intake should be maintained or increased to prevent dehydration and support kidney function. Choice D is incorrect as monitoring for hypotension is not specifically related to the administration of IV Acyclovir in Varicella.
3. A client has a new prescription for Warfarin. The nurse should identify that the concurrent use of which of the following medications increases the client's risk of bleeding?
- A. Vitamin K
- B. Calcium carbonate
- C. Acetaminophen
- D. Ranitidine
Correct answer: C
Rationale: The correct answer is Acetaminophen. Acetaminophen, especially in high doses, can increase the risk of bleeding in clients taking warfarin. Warfarin works by inhibiting the clotting factors dependent on vitamin K, so Vitamin K intake should be consistent but not excessive. Calcium carbonate and ranitidine do not significantly increase the risk of bleeding when used concurrently with Warfarin.
4. A client has a new prescription for Omeprazole. Which of the following statements should the nurse include in teaching the client?
- A. Take the medication before meals.
- B. You may experience a rapid heart rate.
- C. Increase your intake of high-calcium foods.
- D. Expect your urine to turn orange.
Correct answer: A
Rationale: The correct statement for the nurse to include when teaching a client prescribed Omeprazole is to take the medication before meals. Omeprazole, a proton pump inhibitor, is most effective when taken before meals as it works by reducing the amount of acid produced in the stomach. Choice B is incorrect because a rapid heart rate is not a common side effect of Omeprazole. Choice C is incorrect as there is no specific requirement to increase intake of high-calcium foods with Omeprazole. Choice D is also incorrect as Omeprazole does not typically cause urine discoloration.
5. A client has a new prescription for Captopril. Which of the following instructions should the nurse include?
- A. Take this medication with food.
- B. Avoid foods high in potassium.
- C. Take this medication on an empty stomach.
- D. Increase your intake of sodium-rich foods.
Correct answer: C
Rationale: Captopril should be taken on an empty stomach for better absorption. The client should be instructed to take it 1 hour before or 2 hours after meals to optimize its effectiveness. Taking it with food can reduce its absorption and efficacy.
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