ATI LPN
LPN Pharmacology Practice Test
1. A nurse is providing teaching to a client who has a new prescription for warfarin. Which of the following statements should the nurse include?
- A. Avoid using a soft toothbrush.
- B. Report any signs of bleeding.
- C. Increase your intake of leafy green vegetables.
- D. Take the medication with food.
Correct answer: B
Rationale: The correct answer is B: 'Report any signs of bleeding.' When a patient is prescribed warfarin, it is essential to monitor for signs of bleeding as warfarin is an anticoagulant that increases the risk of bleeding. Choices A, C, and D are incorrect. Avoid using a soft toothbrush is not directly related to warfarin therapy, increasing the intake of leafy green vegetables can interfere with warfarin's effectiveness due to its vitamin K content, and taking warfarin with food is unnecessary as it can be taken with or without food.
2. The nurse is caring for a client receiving anticoagulant therapy. Which instruction should the nurse reinforce with the client to prevent bleeding complications?
- A. Use a soft-bristle toothbrush and electric razor.
- B. Increase your intake of vitamin K-rich foods.
- C. Take aspirin if you have a headache.
- D. Avoid using ice packs for injuries.
Correct answer: A
Rationale: The correct instruction to prevent bleeding complications in a client on anticoagulant therapy is to use a soft-bristle toothbrush and an electric razor. These implements help reduce the risk of bleeding by being gentle on the skin and reducing the chances of cuts or abrasions that could lead to bleeding in individuals on anticoagulants. Choice B is incorrect because increasing intake of vitamin K-rich foods can interfere with the action of anticoagulants. Choice C is incorrect as aspirin is a blood thinner and can increase the risk of bleeding when combined with anticoagulant therapy. Choice D is incorrect as ice packs can help reduce bleeding and swelling in injuries, but in a client on anticoagulant therapy, it is important to avoid potential trauma to the skin that could lead to bleeding.
3. A client with atrial fibrillation is prescribed warfarin (Coumadin). The nurse should reinforce which dietary instruction?
- A. Avoid foods high in vitamin K.
- B. Increase intake of dairy products.
- C. Limit intake of foods high in fiber.
- D. Increase protein intake.
Correct answer: A
Rationale: The correct answer is to avoid foods high in vitamin K. Clients taking warfarin (Coumadin) should maintain a consistent intake of vitamin K to keep the medication's effectiveness stable. Foods high in vitamin K, such as leafy greens, can interfere with the anticoagulant effects of warfarin. Therefore, it is crucial for clients to avoid these foods to ensure the therapeutic effects of warfarin. Choices B, C, and D are incorrect because increasing dairy products, limiting fiber intake, or increasing protein intake do not directly impact the effectiveness of warfarin therapy and are not necessary dietary modifications for clients on this medication.
4. The nurse is assisting in the care of a client with a history of chronic obstructive pulmonary disease (COPD) who is on oxygen therapy. Which action should the nurse take to ensure the client's safety?
- A. Set the oxygen flow rate to 4 liters per minute.
- B. Remove oxygen while the client is eating.
- C. Ensure the client wears a nasal cannula instead of a face mask.
- D. Maintain the oxygen flow rate at the lowest level that relieves hypoxia.
Correct answer: D
Rationale: For clients with COPD, too much oxygen can suppress their drive to breathe, leading to hypoventilation. Therefore, the nurse should maintain the oxygen flow rate at the lowest level that relieves hypoxia to prevent complications while ensuring adequate oxygenation. Setting the oxygen flow rate too high (Choice A) can be detrimental for the client with COPD. Removing oxygen while the client is eating (Choice B) can compromise oxygenation, which is essential even during meals. While nasal cannulas are commonly used, the choice of oxygen delivery device depends on the client's needs; there may be situations where a face mask (Choice C) is more appropriate.
5. The nurse is assisting in the care of a client with a history of angina pectoris who is receiving nitroglycerin patches. Which instruction should the nurse reinforce with the client?
- A. Apply the patch to a different site each time.
- B. Remove the patch at night to prevent tolerance.
- C. Use more than one patch if chest pain occurs.
- D. Shower with caution while wearing the patch.
Correct answer: B
Rationale: Removing the nitroglycerin patch at night is crucial to prevent the development of tolerance. Tolerance can occur when the body becomes accustomed to a constant level of the medication, reducing its effectiveness. By removing the patch at night, the client experiences a drug-free period, which helps prevent tolerance and maintains the effectiveness of the nitroglycerin for angina relief. Choices A, C, and D are incorrect because applying the patch to a different site each time helps prevent skin irritation, using more than one patch is not recommended unless instructed by the healthcare provider, and showering with caution is important to prevent dislodging the patch, but it is not the most critical instruction to prevent tolerance development.
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