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. A client is receiving dietary instructions from a nurse regarding warfarin sodium (Coumadin) therapy. The nurse advises the client to avoid which food item?

• A. Grapes
• B. Spinach
• C. Watermelon
• D. Cottage cheese

Correct answer: B

Rationale: The correct answer is B: Spinach. Spinach is high in vitamin K, which antagonizes the effects of warfarin sodium, an anticoagulant medication. Clients taking warfarin should avoid consuming foods rich in vitamin K, like spinach, to maintain the medication's effectiveness. Grapes (choice A), watermelon (choice C), and cottage cheese (choice D) do not interfere with the effects of warfarin, so they are safe for the client to consume while on warfarin therapy.

3. Glimepiride (Amaryl) is prescribed for a client with diabetes mellitus. A healthcare provider reinforces instructions for the client and advises them to avoid which of the following while taking this medication?

• A. Alcohol
• B. Organ meats
• C. Whole-grain cereals
• D. Carbonated beverages

Correct answer: A

Rationale: Alcohol should be avoided when taking glimepiride (Amaryl) because it can cause a disulfiram-like reaction and enhance the hypoglycemic effects of the medication. Consuming alcohol with glimepiride can lead to symptoms such as flushing, palpitations, nausea, and vomiting. Therefore, it is crucial for individuals on glimepiride therapy to steer clear of alcohol to prevent adverse reactions and maintain optimal medication efficacy.

4. A client is prescribed atorvastatin (Lipitor) for hyperlipidemia. Which instruction should the nurse include in the teaching plan?

• A. Take the medication in the morning.
• B. Avoid consuming grapefruit juice.
• C. Increase intake of dairy products.
• D. Take the medication with food.

Correct answer: B

Rationale: The correct instruction for the nurse to include in the teaching plan is to advise the client to avoid consuming grapefruit juice. Grapefruit juice can increase the risk of atorvastatin (Lipitor) toxicity by inhibiting its metabolism. Atorvastatin is typically taken in the evening because cholesterol synthesis occurs at night. Increasing dairy intake is not specifically recommended for atorvastatin use, and the medication can be taken with or without food.

5. A client is instructed to take levothyroxine (Synthroid). The medication should be taken:

• A. With food
• B. At lunchtime
• C. On an empty stomach
• D. At bedtime with a snack

Correct answer: C

Rationale: Levothyroxine should be taken on an empty stomach to enhance absorption. Taking it with food or at bedtime can interfere with its absorption, reducing its effectiveness. Therefore, it is essential for the client to take levothyroxine on an empty stomach to ensure optimal therapeutic outcomes.

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