the nurse is caring for a client with atrial fibrillation who is receiving warfarin coumadin which laboratory test should the nurse monitor to determi
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Nursing Elites

ATI LPN

LPN Pharmacology Practice Questions

1. The client with atrial fibrillation is receiving warfarin (Coumadin). Which laboratory test should be monitored to determine the effectiveness of the therapy?

Correct answer: A

Rationale: Monitoring Prothrombin time (PT) and international normalized ratio (INR) is crucial when a client is on warfarin therapy. These tests assess the clotting ability of the blood and help determine the appropriate dosage of warfarin to prevent complications such as bleeding or clotting events. PT and INR values within the therapeutic range indicate the effectiveness of warfarin in managing atrial fibrillation. Choice B, activated partial thromboplastin time (aPTT), is not typically used to monitor warfarin therapy; it is more commonly used to assess the effectiveness of heparin therapy. Choice C, complete blood count (CBC), does not directly assess the anticoagulant effect of warfarin. Choice D, fibrinogen level, is not a primary test for monitoring warfarin therapy; it is more relevant in assessing conditions like disseminated intravascular coagulation.

2. A client has a new prescription for alendronate. Which of the following instructions should the nurse include?

Correct answer: A

Rationale: When taking alendronate, it is important to take the medication with a full glass of water to prevent esophageal irritation. This helps ensure that the medication reaches the stomach and is properly absorbed. Lying down after taking alendronate can increase the risk of esophageal irritation, which is why it is recommended to stay upright for at least 30 minutes after taking the medication. Taking the medication at bedtime or avoiding dairy products are not specific instructions associated with alendronate administration. Therefore, the correct instruction to include is to take the medication with a full glass of water.

3. A client is scheduled for a coronary artery bypass graft (CABG) surgery. The nurse should prepare the client by reinforcing information about which post-operative care measure?

Correct answer: B

Rationale: Encouraging the client to cough and deep breathe frequently is essential post-operative care to prevent respiratory complications such as atelectasis and pneumonia after CABG surgery. Choices A, C, and D are incorrect because post-CABG surgery, early mobilization is encouraged to prevent complications such as deep vein thrombosis (DVT) and pneumonia. Discharge within 24 hours is unlikely after CABG surgery, and early oral intake is encouraged to promote recovery and prevent complications.

4. The LPN/LVN is assisting in the care of a client with a diagnosis of heart failure who is receiving digoxin (Lanoxin). Which laboratory result should the nurse monitor closely?

Correct answer: B

Rationale: The correct answer is serum potassium. Monitoring serum potassium levels is crucial when a client is receiving digoxin (Lanoxin) because low potassium levels can increase the risk of digoxin toxicity. Digoxin and low potassium levels can lead to serious cardiac complications, such as arrhythmias. Therefore, close monitoring of serum potassium is essential to prevent adverse effects and ensure the safe administration of digoxin in clients with heart failure. Serum sodium, serum calcium, and serum glucose levels are also important laboratory values to monitor in clients with heart failure, but they are not directly associated with the risk of digoxin toxicity. Monitoring these values helps in assessing overall health status, fluid balance, and metabolic functions in the client.

5. 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?

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.

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