A nurse is caring for a pediatric client who weighs 22\text{ kg}. The healthcare provider … — NCLEX-RN

A nurse is caring for a pediatric client who weighs $22\text{ kg}$ . The healthcare provider has prescribed intravenous ceftriaxone $50\text{ mg/kg/day}$ divided into two equal doses. The pharmacy dispenses a ceftriaxone vial reconstituted to a concentration of $1\text{ g}$ per $10\text{ mL}$ . How many milliliters ( $\text{mL}$ ) should the nurse administer for a single dose? Record your answer to one decimal place.

Answer: 5.5 mL

Answer

5.5

The correct answer is

5.5\text{ mL}

. First, determine the daily dose:

22\text{ kg} \times 50\text{ mg/kg} = 1100\text{ mg/day}

. Next, divide this by 2 for the single dose:

1100\text{ mg} \div 2 = 550\text{ mg}

. The concentration is

1\text{ g} (1000\text{ mg})

10\text{ mL}

, which equals

100\text{ mg/mL}

. Finally,

550\text{ mg} \div 100\text{ mg/mL} = 5.5\text{ mL}

Step-by-Step Solution

Calculate the total daily dose based on the client's weight.

1100\text{ mg/day}

The prescription is given as a weight-based daily total (

50\text{ mg/kg/day}

Divide the total daily dose into the single administration dose.

550\text{ mg/dose}

The medication is to be divided into two equal doses per day.

Convert the supplied medication concentration into milligrams.

1000\text{ mg}

per

10\text{ mL}

, or

100\text{ mg/mL}

The vial is labeled in grams (

1\text{ g}

), but the calculated dose is in milligrams.

Calculate the final liquid volume to administer.

5.5\text{ mL}

To find the exact volume of the reconstituted liquid that contains the

550\text{ mg}

single dose.

Key Concept

Weight-based pediatric medication dosage and liquid concentration calculation.

Estimated Time:2m 0s

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