ATI RN
ATI Pharmacology Quizlet
1. When caring for a client prescribed Lithium, which laboratory value should the nurse monitor to assess for potential toxicity?
- A. Serum sodium
- B. Serum lithium
- C. Serum potassium
- D. Serum calcium
Correct answer: B
Rationale: The nurse should monitor the client's serum lithium levels to ensure they are within the therapeutic range and to assess for potential toxicity. Monitoring serum lithium levels is crucial because lithium has a narrow therapeutic range, and levels outside this range can lead to toxicity, which can be life-threatening. Therefore, regular monitoring is essential to prevent adverse effects and ensure the medication's effectiveness.
2. A client has a new prescription for Warfarin. Which of the following herbal supplements should the client be instructed to avoid?
- A. St. John's wort
- B. Echinacea
- C. Garlic
- D. Ginseng
Correct answer: A
Rationale: St. John's wort should be avoided by clients taking Warfarin as it can reduce the medication's effectiveness by affecting its metabolism. Echinacea, garlic, and ginseng are also known to interact with Warfarin, either by increasing the risk of bleeding or altering its anticoagulant effects. However, St. John's wort is particularly significant due to its potent enzyme-inducing properties that can lead to subtherapeutic levels of Warfarin, potentially increasing the risk of blood clots.
3. A client is receiving Enoxaparin for the prevention of deep vein thrombosis. Which of the following actions should the nurse take?
- A. Massage the injection site after administration.
- B. Administer the medication intramuscularly.
- C. Administer the medication into the subcutaneous tissue.
- D. Administer the medication into the deltoid muscle.
Correct answer: C
Rationale: Enoxaparin, a medication used for preventing deep vein thrombosis, should be administered into the subcutaneous tissue, typically in the abdomen. Administering the medication intramuscularly (Choice B) or into the deltoid muscle (Choice D) is incorrect because Enoxaparin is specifically formulated for subcutaneous administration. Massaging the injection site after administration (Choice A) is contraindicated as it may lead to tissue damage and affect the absorption of the medication. Therefore, the correct action is to administer the medication into the subcutaneous tissue as directed.
4. When educating a client starting Simvastatin, which instruction should the nurse provide?
- A. Take this medication in the evening.
- B. Change positions slowly when rising from a chair.
- C. Maintain a consistent intake of green leafy vegetables.
- D. Limit fluid intake to 1 L per day.
Correct answer: A
Rationale: The correct answer is to take Simvastatin in the evening. This timing is important because the body synthesizes the most cholesterol at night. By taking the medication in the evening, its effectiveness is increased, leading to better outcomes for the client.
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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