ATI RN
ATI Pharmacology Proctored Exam 2019
1. A client has a new prescription for Atorvastatin. Which of the following instructions should the nurse include?
- A. Take this medication with food.
- B. Avoid drinking grapefruit juice.
- C. Take this medication in the morning.
- D. Increase your intake of potassium-rich foods.
Correct answer: B
Rationale: The correct answer is B: 'Avoid drinking grapefruit juice.' Grapefruit juice can increase the blood levels of Atorvastatin by inhibiting its metabolism in the body, leading to a higher risk of adverse effects, such as muscle pain and liver damage. Therefore, it is important for the client to avoid consuming grapefruit juice while taking Atorvastatin. Choices A, C, and D are incorrect because Atorvastatin can be taken with or without food, at any time of the day, and there is no specific need to increase potassium-rich foods while on this medication.
2. What is a desired outcome of the drug Phenytoin?
- A. Decrease symptoms of PTSD
- B. Resolution of signs of infection
- C. Decrease or cessation of seizures without excessive sedation
- D. Prevention or relief of bronchospasm
Correct answer: C
Rationale: The correct answer is C: Decrease or cessation of seizures without excessive sedation. Phenytoin is primarily used as an antiepileptic medication to manage and prevent seizures. It does not directly impact symptoms of PTSD (Choice A), resolution of signs of infection (Choice B), or prevention or relief of bronchospasm (Choice D). Therefore, the desired outcome of Phenytoin is to control seizures effectively while avoiding excessive sedation.
3. A healthcare professional is reviewing the medication administration record for a client who is receiving transdermal Fentanyl for severe pain. Which of the following medications should the healthcare professional expect to cause an adverse effect when administered concurrently with Fentanyl?
- A. Ampicillin
- B. Diazepam
- C. Furosemide
- D. Prednisone
Correct answer: B
Rationale: Diazepam, a CNS depressant, can lead to severe sedation when administered concurrently with an opioid like Fentanyl due to their additive central nervous system depressant effects. This interaction can potentiate respiratory depression and other CNS effects, increasing the risk of adverse outcomes.
4. 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.
5. A patient is prescribed acetaminophen 650 mg PO every 6 hr PRN for pain. The available acetaminophen liquid is 500 mg/5 mL. How many mL should the nurse administer per dose?
- A. 6.5 mL
- B. 7 mL
- C. 5 mL
- D. 8 mL
Correct answer: A
Rationale: To calculate the volume to administer: (Desired dose / Concentration) = Volume to administer. In this case, (650 mg / 500 mg) x 5 mL = 6.5 mL. Therefore, the nurse should administer 6.5 mL of acetaminophen liquid per dose to provide the prescribed 650 mg of acetaminophen. Choice B, 7 mL, is incorrect because the correct calculation results in 6.5 mL. Choice C, 5 mL, is incorrect as it is the concentration of the acetaminophen liquid, not the final volume needed. Choice D, 8 mL, is incorrect because it does not reflect the accurate calculation based on the prescription and concentration.
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