ATI LPN
LPN Pharmacology Practice Test
1. A client has a new prescription for metformin. Which of the following statements should the nurse include in the teaching?
- A. Take the medication with a full glass of water.
- B. Monitor for signs of hypoglycemia.
- C. Increase your fluid intake.
- D. Expect a metallic taste in your mouth.
Correct answer: C
Rationale: Increasing fluid intake is an important teaching point for clients starting metformin to prevent gastrointestinal discomfort, a common side effect of this medication. Metformin can cause gastrointestinal symptoms such as nausea, bloating, and diarrhea, which can be reduced by staying well-hydrated. Therefore, advising the client to increase their fluid intake will help minimize these side effects and improve medication tolerance. The other options are incorrect: Option A is a general instruction for taking medications but not specifically related to metformin. Option B is incorrect because metformin typically does not cause hypoglycemia but rather hyperglycemia. Option D is also incorrect as a metallic taste in the mouth is not a common side effect of metformin.
2. The client with deep vein thrombosis (DVT) is receiving anticoagulant therapy. Which laboratory test should the nurse monitor to evaluate the effectiveness of the therapy?
- A. Complete blood count (CBC)
- B. Activated partial thromboplastin time (aPTT)
- C. Serum electrolytes
- D. Liver function tests
Correct answer: B
Rationale: Activated partial thromboplastin time (aPTT) is the correct laboratory test to monitor the effectiveness of anticoagulant therapy, especially with heparin. A prolonged aPTT indicates effective anticoagulation, reducing the risk of further clot formation in the client with deep vein thrombosis (DVT). The other options, such as complete blood count (CBC), serum electrolytes, and liver function tests, do not directly assess the therapeutic effectiveness of anticoagulant therapy. Therefore, the correct answer is B.
3. A client with a history of deep vein thrombosis (DVT) is prescribed warfarin (Coumadin). The nurse should include which instruction in the discharge teaching?
- A. Take the medication at the same time each day
- B. Avoid green leafy vegetables in your diet
- C. Increase your intake of vitamin K-rich foods
- D. Stop the medication if you notice any bruising
Correct answer: A
Rationale: Taking warfarin at the same time each day is crucial to maintain consistent blood levels and ensure the effectiveness of the medication in preventing clot formation. Consistent timing helps in monitoring and adjusting the dosage as needed to keep the international normalized ratio (INR) within the therapeutic range to prevent clotting events or excessive bleeding. Choices B, C, and D are incorrect. Avoiding green leafy vegetables is a misconception; while they are high in vitamin K which antagonizes warfarin, they should not be avoided but consumed in moderation. Increasing vitamin K-rich foods can interfere with warfarin's effectiveness. Stopping the medication due to bruising can be dangerous as it may indicate a clotting problem that the medication is intended to prevent.
4. A client with a history of angina pectoris complains of substernal chest pain. The nurse checks the client's blood pressure and administers nitroglycerin 0.4 mg sublingually. Five minutes later, the client is still experiencing chest pain. What is the next appropriate nursing action?
- A. Administer another dose of nitroglycerin.
- B. Notify the healthcare provider immediately.
- C. Have the client lie down and stay calm.
- D. Give the client aspirin 325 mg to chew.
Correct answer: A
Rationale: If chest pain persists after the first dose of nitroglycerin, it is appropriate to administer a second dose while continuing to monitor the client's response. Nitroglycerin is a vasodilator commonly used to relieve angina symptoms by dilating blood vessels and increasing blood flow to the heart. Reassessing the client's response and providing a second dose may be necessary to achieve adequate pain relief and improve blood flow to the heart. Administering another dose of nitroglycerin is the next appropriate step in managing angina symptoms. Notifying the healthcare provider immediately (Choice B) may be necessary if the client's condition worsens or if there are other concerning symptoms. Having the client lie down and stay calm (Choice C) is generally recommended but addressing the ongoing chest pain takes precedence. Giving the client aspirin 325 mg to chew (Choice D) is beneficial for suspected myocardial infarction but is not the immediate action indicated for persistent angina symptoms.
5. A client has a new prescription for verapamil. Which of the following instructions should the nurse include?
- A. Monitor your heart rate daily.
- B. Take the medication at bedtime.
- C. Avoid consuming grapefruit juice.
- D. Take the medication with food.
Correct answer: A
Rationale: The correct answer is to instruct the client to monitor their heart rate daily when taking verapamil. Verapamil is a calcium channel blocker that can cause bradycardia, making it crucial to monitor the heart rate regularly to detect any changes promptly. Choice B, taking the medication at bedtime, is not specifically related to verapamil administration. Choice C, avoiding grapefruit juice, is more relevant to medications metabolized by CYP3A4 enzymes, not verapamil. Choice D, taking the medication with food, is not a specific instruction for verapamil, as it can be taken with or without food.
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