A nurse is preparing to administer digoxin at a dosage of 8 mcg/kg/day orally, divided equally every 12 hours, to a preschooler who weighs 33 lbs. Digoxin elixir is available at a concentration of 0.05 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer and Explanation

The Correct Answer is ["1.2"]

- Step 1: Identify the child's weight in pounds. The child weighs 33 lbs.

- Step 2: Convert the child's weight from pounds to kilograms. We know that 1 kg = 2.2 lbs. So, 33 lbs = 33 ÷ 2.2 kg. Calculating the division gives us approximately 15 kg.

- Step 3: Identify the prescribed dose in mcg/kg/day. The child is scheduled to receive 8 mcg/kg/day of digoxin, divided equally every 12 hours.

- Step 4: Calculate the total daily dose in mcg. We can do this by multiplying the child's weight in kg by the prescribed dose in mcg/kg:

- Total daily dose = 8 mcg/kg/day × 15 kg.

- Calculating the multiplication gives us: Total daily dose = 120 mcg/day.

- Step 5: Since the dose is divided equally every 12 hours, we divide the total daily dose by 2 to get the dose per administration:

- Dose per administration = Total daily dose ÷ 2.

- Dose per administration = 120 mcg ÷ 2.

- Calculating the division gives us: Dose per administration = 60 mcg.

- Step 6: Identify the concentration of the available solution. The available solution contains 0.05 mg/mL of digoxin. Convert this to mcg/mL for consistency with the dose per administration. We know that 1 mg = 1000 mcg. So, 0.05 mg = 0.05 × 1000 mcg = 50 mcg/mL.

- Step 7: Calculate the volume of solution needed to deliver the required dose. We can set up a proportion to solve for this:

- 50 mcg is to 1 mL as 60 mcg is to X mL.

- In other words, 50 mcg : 1 mL = 60 mcg : X mL.

- Step 8: Solve for X using cross-multiplication and division:

- Cross-multiplication gives us: 50 mcg × X mL = 60 mcg × 1 mL.

- Simplifying this gives us: 50X = 60.

- Dividing both sides by 50 gives us: X = 60 ÷ 50.

- Calculating the division gives us: X = 1.2.

Administer 1.2 mL of the digoxin elixir per dose.

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Free Nursing Study Resources

Correct Answer is ["60"]

Explanation

- Step 1: Identify the required dose in grams. The client is scheduled to receive 30 grams of lactulose.

- Step 2: Identify the concentration of the available solution. The available solution contains 5 grams of lactulose per 10 mL.

- Step 3: Calculate the volume of solution needed to deliver the required dose. We can set up a proportion to solve for this:

- 5 grams is to 10 mL as 30 grams is to X mL.

- In other words, 5 g : 10 mL = 30 g : X mL.

- Step 4: Solve for X using cross-multiplication and division:

- Cross-multiplication gives us: 5 g × X mL = 30 g × 10 mL.

- Simplifying this gives us: 5X = 300.

- Dividing both sides by 5 gives us: X = 300 ÷ 5.

- Calculating the division gives us: X = 60.

60 mL of the lactulose solution should be poured into the medication cup to administer the required dose of 30 grams.

A. Administer oxygen therapy B. Start an IV infusion of Lactated Ringer's C. Initiate cardiac monitoring D. Give morphine IV

Correct Answer is A

Explanation

Choice A reason: Administering oxygen therapy is the first and immediate intervention for a client with a pulmonary embolism to address hypoxemia.

Choice B reason: Starting an IV infusion of Lactated Ringer's is important for fluid resuscitation but is not the first intervention for pulmonary embolism.

Choice C reason: Initiating cardiac monitoring is important for observing the client's heart function but comes after ensuring the client is receiving adequate oxygen.

Choice D reason: Giving morphine IV may be used for pain management in pulmonary embolism but is not the first-line intervention.

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Naxlex Comprehensive Predictor Exams

The client is scheduled to receive 30 grams of lactulose orally every 12 hours. An oral solution containing 5 g/10 mL is available. How many mL should be poured into the medication cup to administer the required dose?

Correct Answer is ["60"]

Explanation

A nurse is caring for a client who develops a pulmonary embolism. Which of the following interventions should the nurse implement first?

Correct Answer is A

Explanation

A nurse is caring for a client who has cirrhosis of the liver. Which of the following medications should the nurse anticipate may be ordered for this client? (Select all that apply.)

A client is admitted to the hospital with suspected rheumatic endocarditis. Which of the following laboratory tests would assist in confirming the diagnosis?

A nurse in the emergency department is caring for a client who took three nitroglycerin tablets sublingually for chest pain. The client reports relief from the chest pain but now is experiencing a headache. Which of the following statements should the nurse make?

A nurse is caring for a client who has a chest tube in place connected to a closed chest drainage system. Which of the following findings should indicate to the nurse that the client's lung has re-expanded?

A nurse is instructing a client with diabetes mellitus about peritoneal dialysis. The nurse tells the client that it is important to maintain the prescribed dwell time for the dialysis due to the risk of which complication?

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