ATI RN
ATI Pharmacology Proctored Exam 2023
1. A client has a new prescription for Verapamil. Which of the following instructions should the nurse include?
- A. Take this medication at bedtime.
- B. Monitor for signs of hyperglycemia.
- C. Avoid drinking grapefruit juice.
- D. Increase your intake of potassium-rich foods.
Correct answer: C
Rationale: The correct instruction for a client prescribed Verapamil is to avoid drinking grapefruit juice. Grapefruit juice can inhibit the metabolism of Verapamil, leading to increased blood levels of the medication. This can result in a higher risk of adverse effects, such as hypotension and bradycardia. Therefore, it is essential for the client to avoid grapefruit juice while taking Verapamil to prevent potential complications. Choices A, B, and D are incorrect because taking Verapamil at bedtime, monitoring for signs of hyperglycemia, and increasing potassium-rich foods intake are not specific instructions related to Verapamil therapy and do not address the potential interaction with grapefruit juice.
2. A child is prescribed Amoxicillin 20 mg/kg/day PO to be administered every 12 hr. The child weighs 44 lb. The available medication is amoxicillin suspension 250 mg/5 mL. How many mL should be given per dose?
- A. 4 mL
- B. 5 mL
- C. 6 mL
- D. 3 mL
Correct answer: A
Rationale: To calculate the dosage per administration: Convert the weight to kg (44 lb / 2.2 lb/kg = 20 kg). Then, (20 mg/kg/day x 20 kg) / 2 (for every 12 hr dosing) = 200 mg per dose. (200 mg / 250 mg) x 5 mL = 4 mL per dose. Therefore, the nurse should administer 4 mL of amoxicillin suspension per dose. Choice B, 5 mL, is incorrect because the calculation shows that 4 mL is the correct dose. Choices C and D are also incorrect as they are not in line with the calculated dosage based on the weight of the child and the concentration of the medication.
3. What is the antidote for Warfarin?
- A. Naloxone
- B. Vitamin K
- C. Glucagon
- D. Vitamin B
Correct answer: B
Rationale: The correct antidote for Warfarin is Vitamin K. Warfarin works by inhibiting vitamin K-dependent clotting factors. Administering Vitamin K helps reverse its effects by replenishing these factors. Choices A, C, and D are incorrect. Naloxone is used to reverse opioid overdose, Glucagon is used to treat severe low blood sugar, and Vitamin B is not the antidote for Warfarin.
4. A nurse is providing instructions to a client who has a prescription for Amoxicillin and Clarithromycin to treat a Peptic Ulcer. Which of the following information should the nurse include in the teaching?
- A. Take these medications with foo '
- B. These medications can turn your stool black.'
- C. These medications can cause photosensitivity.'
- D. The purpose of these medications is to decrease the pH of gastric juices in the stomach.'
Correct answer: A
Rationale: The nurse should instruct the client to take these medications with food to reduce GI disturbances.
5. A client is taking Sucralfate PO for Peptic Ulcer Disease and has a new prescription for phenytoin to control seizures. Which of the following instructions should the nurse include?
- A. Take an antacid with the sucralfate.
- B. Take sucralfate with a glass of milk.
- C. Allow a 2-hour interval between these medications.
- D. Chew the sucralfate thoroughly before swallowing.
Correct answer: C
Rationale: Sucralfate can interfere with the absorption of phenytoin. To prevent this interaction, the client should allow a 2-hour interval between taking sucralfate and phenytoin. This timing helps to ensure adequate absorption and effectiveness of both medications without compromising therapeutic outcomes. Choices A, B, and D are incorrect because taking an antacid with sucralfate, taking sucralfate with a glass of milk, and chewing sucralfate thoroughly before swallowing do not address the need for a 2-hour interval between these medications to prevent interference with phenytoin absorption.
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