ATI RN
ATI Pharmacology Quizlet
1. A client with angina is being taught how to use nitroglycerin transdermal ointment. Which instruction should the nurse include?
- A. Remove the prior dose before applying a new dose.
- B. Rub the ointment directly into the skin until it is no longer visible.
- C. Cover the applied ointment with a clean gauze pad.
- D. Apply the ointment to the same skin area each time.
Correct answer: A
Rationale: The correct instruction is to remove the prior dose before applying a new one to prevent toxicity. Nitroglycerin ointment can cause adverse effects if accumulated doses are not removed. Rubbing the ointment until it's not visible or covering it with gauze may alter absorption. Applying it to the same area each time can lead to skin irritation or desensitization.
2. A healthcare provider is reviewing the medical history of a client who is scheduled for surgery and takes Warfarin daily. Which of the following laboratory results should the healthcare provider monitor?
- A. Potassium level
- B. INR
- C. BUN
- D. Platelet count
Correct answer: B
Rationale: The INR (International Normalized Ratio) is the most important lab value to monitor in a client taking warfarin. Warfarin is an anticoagulant, and the INR reflects the effectiveness of anticoagulation therapy. Monitoring the INR helps ensure the client is within the therapeutic range to prevent both clotting and bleeding complications.
3. A drug ending in the suffix (tidine) is considered a ______.
- A. Antidepressant
- B. Protease inhibitor
- C. Beta antagonist
- D. H antagonist
Correct answer: D
Rationale: Drugs ending in -tidine are histamine (H2) receptor antagonists, which block the action of histamine at the H2 receptors, commonly used to reduce stomach acid production. Therefore, the correct answer is an 'H antagonist.' It is essential to be familiar with drug suffixes as they can provide clues to the drug's class and function.
4. A nurse reviewing a client's medical record notes a new prescription for verifying the trough level of the client's medication. Which of the following actions should the nurse take?
- A. Obtain a blood specimen immediately prior to administering the next dose of medication.
- B. Verify that the client has been taking the medication for 24 hours before obtaining a blood specimen.
- C. Ask the client to provide a urine specimen after the next dose of medication.
- D. Administer the medication and obtain a blood specimen 30 minutes later.
Correct answer: A
Rationale: To verify the trough levels of a medication accurately, the nurse should obtain a blood specimen immediately before administering the next dose of the medication. The trough level represents the lowest concentration of the medication in the bloodstream, typically right before the next dose is due. This timing ensures an accurate assessment of the drug's concentration in the body at its lowest point, aiding in determining the drug's effectiveness and potential toxicity levels. Choice B is incorrect because waiting for 24 hours would not provide the trough level. Choice C is incorrect as urine specimens are not used to measure trough levels. Choice D is incorrect as obtaining a blood specimen 30 minutes after administering the medication would not reflect the trough level.
5. A client is prescribed Diltiazem. Which of the following findings should the nurse monitor?
- A. Tachycardia
- B. Bradycardia
- C. Hypertension
- D. Hyperkalemia
Correct answer: B
Rationale: Diltiazem is a calcium channel blocker that can cause bradycardia as an adverse effect due to its negative chronotropic properties, slowing down the heart rate. Therefore, the nurse should monitor the client for signs of bradycardia by regularly assessing the heart rate to prevent potential complications. Monitoring for tachycardia (choice A) is incorrect as diltiazem typically does not cause tachycardia. Hypertension (choice C) is not a typical finding to monitor for with diltiazem use. Hyperkalemia (choice D) is not directly associated with diltiazem administration.
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