Nursing Elites

1. A client who is receiving digoxin (Lanoxin) daily has a serum potassium level of 3.0 mEq/L and is complaining of anorexia. A healthcare provider prescribes a digoxin level to rule out digoxin toxicity. A nurse checks the results, knowing that which of the following is the therapeutic serum level (range) for digoxin?

• A. 3 to 5 ng/mL
• B. 0.5 to 2 ng/mL
• C. 1.2 to 2.8 ng/mL
• D. 3.5 to 5.5 ng/mL

Correct answer: B

Rationale: The therapeutic serum level for digoxin ranges from 0.5 to 2 ng/mL. This range is considered optimal for therapeutic effects while minimizing the risk of toxicity. Levels above 2 ng/mL may lead to digoxin toxicity, which can manifest as anorexia among other symptoms. Therefore, the nurse should be vigilant in monitoring the digoxin levels to ensure the client's safety and therapeutic effectiveness of the medication.

2. Salicylic acid is prescribed for a client with a diagnosis of psoriasis. The nurse monitors the client, knowing that which of the following would indicate the presence of systemic toxicity from this medication?

• A. Tinnitus
• B. Diarrhea
• C. Constipation
• D. Decreased respirations

Correct answer: A

Rationale: The correct answer is A: Tinnitus. Salicylic acid can lead to systemic toxicity, known as salicylism, which may manifest with symptoms like tinnitus, dizziness, hyperventilation, and mental disturbances. Tinnitus is a common early sign of salicylism and should be monitored closely by the nurse to prevent further complications.

3. Which laboratory test should the nurse monitor to determine the effectiveness of heparin therapy for a client with deep vein thrombosis?

• A. Platelet count
• B. Prothrombin time (PT)
• C. Activated partial thromboplastin time (aPTT)
• D. Hemoglobin and hematocrit

Correct answer: C

Rationale: The activated partial thromboplastin time (aPTT) is the specific laboratory test used to monitor the effectiveness of heparin therapy in patients with deep vein thrombosis. It measures the time it takes for blood to clot and is crucial in assessing the therapeutic range of heparin. Platelet count, prothrombin time (PT), and hemoglobin and hematocrit levels are important parameters in assessing coagulation and blood status but do not directly indicate the effectiveness of heparin therapy.

4. A client with hypertension is prescribed losartan (Cozaar). Which instruction should the nurse include in the teaching plan?

• A. Avoid foods high in potassium.
• B. Take the medication with grapefruit juice.
• C. Monitor blood pressure weekly.
• D. Report any swelling of the lips or face.

Correct answer: D

Rationale: The correct instruction for a client prescribed losartan (Cozaar) is to report any swelling of the lips or face. Losartan can cause angioedema, which is a serious side effect that requires immediate medical attention. Clients do not need to avoid potassium-rich foods unless specifically instructed by their healthcare provider. Taking the medication with grapefruit juice is not recommended as it can interact with certain medications. Additionally, monitoring blood pressure regularly is important, but it should not be limited to a weekly basis; blood pressure should be monitored as per the healthcare provider's recommendation.

5. The healthcare provider prescribes exenatide (Byetta) for a client with type 1 diabetes mellitus who takes insulin. What is the appropriate intervention for the nurse?

• A. Administer the medication within 60 minutes before the morning and evening meal.
• B. Withhold the medication and question the prescription with the healthcare provider.
• C. Monitor the client for gastrointestinal side effects after administration of the medication.
• D. Withdraw the insulin from the Penlet into an insulin syringe to prepare for administration.

Correct answer: B

Rationale: Exenatide (Byetta) is specifically indicated for the treatment of type 2 diabetes mellitus and is not recommended for clients with type 1 diabetes mellitus who are taking insulin. Choice A is incorrect because exenatide should not be administered to a client with type 1 diabetes mellitus who takes insulin. Choice C is not the most appropriate initial action when the prescription is not suitable for the client. Choice D is unrelated to the administration of exenatide. Therefore, the appropriate intervention for the nurse is to withhold the medication and question the prescription with the healthcare provider to ensure the safety and appropriateness of the treatment plan for the client.

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