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A nurse is preparing to administer gentamicin 2 mg/kg IM to a school-age child who weighs 55 lb. Available gentamicin injection 40 is 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 ["1.3"]

Step-by-step calculation:

The child's weight is 55 lb.

The medication dosage is 2 mg/kg.

The available medication concentration is 40 mg/mL.

Calculating the total dose in mg:

Convert the child's weight to kg: 55 lb ÷ 2.2 lb/kg = 25 kg

Calculate the total dose: 25 kg × 2 mg/kg = 50 mg

Calculating the volume to administer:

Use the concentration of the medication: 50 mg ÷ 40 mg/mL = 1.25 mL

Rounding the answer: 1.25 rounds to 1.3 mL

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Correct Answer is ["0.73"]

Explanation

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

The conversion factor is 1 kg = 2.2 lb.

Weight in kg= 32/2.2≈14.55 kg

Step 2: Calculate the required dose of ondansetron in mg.

Total dose of ondansetron needed:

Dose in mg=0.1 mg/kg×14.55 kg=1.455 mg

Step 3: Determine the volume of ondansetron to administer.

To determine how many mL the nurse should administer, we use the formula:

Volume (mL)=Dose in mg/Concentration in mg/mL=1.455 mg/2 mg/mL=0.7275 mL

Step 4: Round the answer.

Rounding off 0.7275 mL gives 0.73 mL.

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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A nurse is preparing to administer gentamicin 2 mg/kg IM to a school-age child who weighs 55 lb. Available gentamicin injection 40 is 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.)

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Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer ondansetron 0.1 mg/kg IV bolus to a toddler who weighs 32 lb. Available is ondansetron injection 2 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest hundredth. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["0.73"]

Explanation

Correct Answer is ["0.24"]

Explanation

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A nurse is preparing to administer gentamicin 2 mg/kg IM to a school-age child who weighs 55 lb. Available gentamicin injection 40 is 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.)