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. Before initiating a client with tuberculosis on anti-tuberculosis therapy with isoniazid (INH), a nurse ensures that which of the following baseline study has been completed?

• A. Electrolyte levels
• B. Coagulation times
• C. Liver enzyme levels
• D. Serum creatinine level

Correct answer: C

Rationale: Before starting INH therapy for tuberculosis, it is essential to assess liver enzyme levels as INH can cause hepatotoxicity. Monitoring liver enzyme levels before and during the initial 3 months of therapy is crucial to detect any liver damage early and prevent further complications. Choice A, electrolyte levels, are not directly impacted by INH therapy. Choice B, coagulation times, are not routinely monitored before starting INH therapy. Choice D, serum creatinine level, is not specifically required as a baseline study before initiating INH therapy for tuberculosis.

3. When reviewing laboratory results for a client receiving tacrolimus (Prograf), which laboratory result would indicate to the nurse that the client is experiencing an adverse effect of the medication?

• A. Blood glucose of 200 mg/dL
• B. Potassium level of 3.8 mEq/L
• C. Platelet count of 300,000 cells/mm³
• D. White blood cell count of 6000 cells/mm³

Correct answer: A

Rationale: An elevated blood glucose level of 200 mg/dL indicates an adverse effect of tacrolimus. This finding suggests hyperglycemia, which is a known adverse effect of the medication. Other potential adverse effects of tacrolimus include neurotoxicity and hypertension. Monitoring blood glucose levels is crucial to detect and manage this adverse effect promptly. Choices B, C, and D are not directly associated with adverse effects of tacrolimus. Potassium, platelet count, and white blood cell count are important parameters to monitor for other reasons but not specifically for detecting adverse effects of tacrolimus.

4. A client with rheumatoid arthritis is prescribed methotrexate. Which instruction should the nurse include in the client's teaching plan?

• A. Avoid taking folic acid supplements.
• B. Report any signs of infection immediately.
• C. Take the medication with a full meal.
• D. Limit fluid intake while on this medication.

Correct answer: B

Rationale: The correct instruction for the nurse to include in the client's teaching plan when taking methotrexate is to report any signs of infection immediately. Methotrexate can suppress the immune system, making the client more susceptible to infections. It is important for the client to promptly report any signs of infection to receive timely medical intervention. Choice A is incorrect because folic acid supplements are often recommended to reduce side effects of methotrexate. Choice C is incorrect as methotrexate is usually taken on an empty stomach unless the client experiences gastrointestinal upset. Choice D is incorrect as there is no need to limit fluid intake while on methotrexate; in fact, maintaining adequate fluid intake is important to prevent complications such as kidney damage.

5. Why is prostaglandin E1 prescribed for a child with transposition of the great arteries?

• A. Prevents hypercyanotic (blue or tet) spells
• B. Maintains an adequate hormone level
• C. Maintains the position of the great arteries
• D. Provides adequate oxygen saturation and maintains cardiac output

Correct answer: D

Rationale: Prostaglandin E1 is prescribed for a child with transposition of the great arteries to increase blood mixing, which helps maintain adequate oxygen saturation and cardiac output. This medication does not prevent hypercyanotic spells, maintain hormone levels, or influence the position of the great arteries.

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