Nursing Elites

1. 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.

2. A client who is taking hydrochlorothiazide (HydroDIURIL, HCTZ) has been started on triamterene (Dyrenium) as well. The client asks the nurse why both medications are required. The nurse formulates a response, based on the understanding that:

• A. Both are weak potassium-losing diuretics.
• B. The combination of these medications prevents renal toxicity.
• C. Hydrochlorothiazide is less expensive, so using a combination of diuretics is cost-effective.
• D. Triamterene is a potassium-sparing diuretic, whereas hydrochlorothiazide is a potassium-losing diuretic.

Correct answer: D

Rationale: The combination of triamterene and hydrochlorothiazide is used because triamterene is a potassium-sparing diuretic, which helps retain potassium, while hydrochlorothiazide is a potassium-losing diuretic, which promotes potassium excretion. This combination helps balance potassium levels in the body, preventing imbalances that can occur when using potassium-losing diuretics alone.

3. The nurse provides medication instructions to an older hypertensive client who is taking 20 mg of lisinopril (Prinivil, Zestril) orally daily. The nurse evaluates the need for further teaching when the client states which of the following?

• A. I can skip a dose once a week.
• B. I need to change my position slowly.
• C. I take the pill after breakfast each day.
• D. If I get a bad headache, I should call my doctor immediately.

Correct answer: A

Rationale: Lisinopril should be taken daily as prescribed and not skipped. Skipping doses can lead to ineffective treatment.

4. A client is taking levothyroxine (Synthroid) for hypothyroidism. Which symptom would indicate to the nurse that the client is taking too much medication?

• A. Bradycardia
• B. Lethargy
• C. Tremors
• D. Constipation

Correct answer: C

Rationale: When a client is taking an excessive dose of levothyroxine (Synthroid), it can lead to symptoms of hyperthyroidism. Tremors are a common sign of excessive medication, along with tachycardia and insomnia. Bradycardia, lethargy, and constipation are typical symptoms of hypothyroidism, indicating that the client may require a higher dose of levothyroxine rather than too much.

5. 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.

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