ATI RN
ATI Pharmacology Proctored Exam 2023
1. 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 (Choice C). Acetaminophen, especially in high doses, can increase the risk of bleeding in clients taking Warfarin. It can potentiate the anticoagulant effect of Warfarin, leading to an increased risk of bleeding. Vitamin K (Choice A) is actually used to reverse the effects of Warfarin in case of over-anticoagulation, so it does not increase the risk of bleeding. Calcium carbonate (Choice B) and Ranitidine (Choice D) do not significantly interact with Warfarin to increase the risk of bleeding.
2. A client has a new prescription for Efavirenz, an NNRTI. Which of the following instructions should the nurse include?
- A. Take this medication at bedtime to prevent drowsiness.
- B. Take this medication with a glass of milk.
- C. Take this medication with a glass of juice.
- D. Take this medication at the same time every day.
Correct answer: A
Rationale: The correct instruction is to take Efavirenz at bedtime to prevent drowsiness and manage central nervous system side effects like dizziness and vivid dreams. While it is important to take the medication at the same time daily for consistent blood levels, the emphasis should be on bedtime to minimize the impact of these side effects. Choices B and C suggesting taking the medication with milk or juice are incorrect and not relevant to optimizing Efavirenz therapy.
3. A client has a new prescription for levothyroxine. Which of the following instructions should the nurse include?
- A. Take this medication at bedtime.
- B. Take this medication with food.
- C. Take this medication on an empty stomach in the morning.
- D. Take this medication with an antacid.
Correct answer: C
Rationale: Levothyroxine should be taken on an empty stomach in the morning to enhance its absorption. This timing allows for optimal absorption and effectiveness of the medication. Taking it with food, at bedtime, or with an antacid may interfere with its absorption and reduce its efficacy.
4. A client is receiving discharge teaching for a new prescription of Fluoxetine for PTSD. Which of the following statements should be included in the teaching?
- A. You may experience a decreased desire for intimacy while taking this medication.
- B. You should take this medication in the evening to help promote sleep.
- C. You may experience fewer urinary adverse effects if you urinate just before taking this medication.
- D. You should wear sunglasses when outdoors due to the light sensitivity caused by this medication.
Correct answer: A
Rationale: One of the potential adverse effects of fluoxetine and other SSRIs is a decreased libido, which can impact intimacy. It is essential for the nurse to educate the client about this possible side effect to promote awareness and understanding of the medication's effects.
5. Which of the following is considered a class IA Sodium Channel blocker?
- A. Mexiletine
- B. Amiodarone
- C. Quinidine
- D. Procainamide
Correct answer: D
Rationale: Procainamide is a class IA antiarrhythmic drug that acts as a sodium channel blocker by blocking fast sodium channels. Mexiletine is a class IB antiarrhythmic drug, not class IA. Amiodarone is a class III antiarrhythmic, and Quinidine is a class IA antiarrhythmic but not a sodium channel blocker.
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