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A nurse is preparing to administer clindamycin 10 mg/kg IM to a school-age child who weighs 77 lb. Available is clindamycin injection 150 mg/mL. How many mL should the nurse administer? (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 ["2.3"]

Step-by-step calculation:

The child's weight is 77 lb.

The medication dosage is 10 mg/kg.

The available medication concentration is 150 mg/mL.

Calculating the total dose in mg:

Convert the child's weight to kg: 77 lb ÷ 2.2 lb/kg = 35 kg

Calculate the total dose: 35 kg × 10 mg/kg = 350 mg

Calculating the volume to administer:

Use the concentration of the medication: 350 mg ÷ 150 mg/mL = 2.33 mL

Rounding the answer:

2.33 rounds to 2.3 mL


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Related Questions

Correct Answer is ["1"]

Explanation

Step 1: Identify the conversion factor.

We need to convert milliliters (mL) to ounces (oz). The conversion factor is:

1 ounce (oz) = 30 milliliters (mL)

Step 2: Set up the conversion.

The prescribed dose is 30 mL. We want to convert 30 mL to ounces.

Using the conversion factor:

Amount in oz=Amount in mL/Conversion factor=30 mL/30 mL/oz

Step 3: Perform the calculation.

Amount in oz=30/30=1 oz

Step 4: Round the answer (if needed).

1 oz is a whole number

Correct Answer is ["0.24"]

Explanation

Step 1: Convert the infant's weight from pounds to kilograms.

To convert pounds to kilograms, we use the conversion factor 1 kg = 2.2 lb.

Weight in kg= 21/2.2≈9.55 kg

Step 2: Calculate the total daily dose of clindamycin in mg.

Total dose in mg/day=15 mg/kg/day×9.55 kg=143.25 mg/day

Step 3: Divide the total daily dose into 4 equal doses (every 6 hours).

We divide the total daily dose by 4:

Dose per administration=143.25 mg/4=35.8125 mg/dose

Step 4: Determine the volume to administer per dose.

The available clindamycin phosphate injection concentration is 150 mg/mL. To determine how many mL the nurse should administer per dose, we use the following formula:

Volume (mL)=Dose in mg/Concentration in mg/mL=35.8125 mg/150 mg/mL=0.238 mL

Step 5: Round the answer.

Rounding off 0.238 mL gives 0.24 mL.

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