Nursing Elites

1. 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?

• A. Serum sodium
• B. Serum potassium
• C. Serum calcium
• D. Serum glucose

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.

2. 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.

3. The client is receiving heparin therapy for deep vein thrombosis (DVT). Which lab test should be monitored to evaluate the effectiveness of heparin?

• A. Prothrombin time (PT)
• B. International normalized ratio (INR)
• C. Activated partial thromboplastin time (aPTT)
• D. Fibrinogen levels

Correct answer: C

Rationale: Activated partial thromboplastin time (aPTT) is the appropriate lab test to monitor the therapeutic effectiveness of heparin therapy. Heparin affects the intrinsic pathway of the coagulation cascade, and monitoring aPTT helps ensure the client is within the therapeutic range to prevent clot formation. Prothrombin time (PT) and International normalized ratio (INR) are used to monitor warfarin therapy, a different anticoagulant that affects the extrinsic pathway of the coagulation cascade. Fibrinogen levels are not specific to monitoring heparin therapy.

4. 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.

5. The client is reinforcing teaching for peripheral artery disease (PAD). Which statement by the client indicates correct understanding?

• A. I will keep my legs elevated on pillows while resting.
• B. I will avoid crossing my legs when sitting.
• C. I will wear tight compression stockings to improve circulation.
• D. I will apply heat to my legs to relieve pain and improve circulation.

Correct answer: B

Rationale: The correct answer is B. Crossing the legs can further impede blood flow in clients with PAD, worsening symptoms. Avoiding leg crossing helps maintain adequate blood flow and reduces the risk of complications associated with peripheral artery disease. Choices A, C, and D are incorrect because elevating the legs, wearing tight compression stockings, and applying heat can exacerbate symptoms in PAD by restricting blood flow or causing potential harm.

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