A nurse is preparing to administer diazepam 0.3 mg/kg IV bolus to a toddler who weighs 24 Ib. Available is diazepam injection 5 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.)
The Correct Answer is ["0.65"]
Let’s calculate this step by step:
Step 1: Convert the toddler’s weight from pounds (lb) to kilograms (kg) using the conversion factor 1 kg = 2.2 lbs.
24 lbs ÷ 2.2 lbs/kg = 10.91 kg
Step 2: Calculate the total amount of diazepam needed using the dosage of 0.3 mg/kg.
0.3 mg/kg × 10.91 kg = 3.27 mg
Step 3: Calculate the volume of diazepam injection to administer using the concentration of 5 mg/mL.
3.27 mg ÷ 5 mg/mL = 0.654 mL
Rounding to the nearest hundredth, the nurse should administer 0.65 mL of diazepam injection.
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Related Questions
Correct Answer is ["0.24"]
Explanation
To calculate this, first convert the infant's weight from pounds to kilograms: 21 lb * (1 kg / 2.2 lb) = 9.55 kg.
Then, calculate the total daily dose of clindamycin phosphate in mg: 15 mg/kg/day * 9.55 kg/day = 143.25 mg/day.
Since the daily dose is divided into equal doses every 6 hours, calculate the dose per administration: 143.25 mg/day / (24 hr/day / 6 hr/dose) = 35.81 mg/dose.
Finally, divide the dose in mg by the concentration of the clindamycin phosphate injection to find the volume to administer: 35.81 mg / (150 mg/mL) = 0.2387 mL/dose, which rounds to 0.24 mL when rounded to the nearest hundredth.
Correct Answer is ["11.6"]
Explanation
To calculate this, first convert the child's weight from pounds to kilograms: 64 lb * (1 kg / 2.2 lb) = 29.09 kg. Then, calculate the dose of vancomycin in mg: 20 mg/kg * 29.09 kg = 581.8 mg.
Finally, divide the dose in mg by the concentration of the vancomycin injection to find the volume to administer: 581.8 mg / (50 mg/mL) = 11.636 mL/dose, which rounds to 11.6 mL when rounded to the nearest tenth.
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