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A nurse is preparing to administer dobutamine 12 mcg/kg/min by continuous IV infusion to a preterm newborn who weighs 2 kg. Available is dobutamine 250 mg in 500 mL dextrose 5% in water. The nurse should set the IV pump to deliver how many mL/hr?
(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 ["2.9"]

Let’s calculate the IV pump rate for administering dobutamine to a preterm newborn.

Step 1 is to convert the dose from mcg/kg/min to mg/kg/min. We know that 1 mg = 1000 mcg, so we have:

12 mcg/kg/min ÷ 1000 = 0.012 mg/kg/min

Step 2 is to calculate the total amount of dobutamine the newborn needs per minute:

0.012 mg/kg/min × 2 kg = 0.024 mg/min

Step 3 is to convert this to an hourly rate:

0.024 mg/min × 60 min/hr = 1.44 mg/hr

Step 4 is to calculate the volume of the solution that contains this amount of dobutamine. We know that 250 mg of dobutamine is dissolved in 500 mL of solution, so:

(1.44 mg/hr ÷ 250 mg) × 500 mL = 2.88 mL/hr

So, the nurse should set the IV pump to deliver approximately 2.9 mL/hr (rounded to the nearest tenth).


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Related Questions

Correct Answer is ["2500"]

Explanation

Step 1: Convert liters to milliliters.

1 liter is equal to 1000 milliliters. Therefore, we can convert 2.5 liters to milliliters as follows:

2.5 liters * 1000 milliliters/liter = 2500 milliliters

Step 2: Round the answer to the nearest whole number.

The answer is 2500 milliliters. Since we are instructed to round to the nearest whole number, we do not need to make any changes.

Therefore, the nurse should administer 2500 mL of lactated Ringer's to the client.

Correct Answer is ["1.3 "]

Explanation

Amount (mL) = Dose (units) / Concentration (units/mL) Substitute the given values into the formula:

Amount (mL) = 800,000 units / 600,000 units/mL Amount (mL) = 1.3 mL

Therefore, the nurse should administer 1.3 mL of procaine penicillin G injection

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