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.)
The Correct Answer is ["0.73"]
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.
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Related Questions
Correct Answer is ["0.8"]
Explanation
Step 1: Determine the total dose of ceftriaxone to administer.
The total dose prescribed is 400 mg. This dose will be divided into two equal doses for the infant.
Step 2: Calculate the volume for each dose.
The available ceftriaxone solution has a concentration of 500 mg in 2 mL. This means that 500 mg is present in 2 mL, so each mL contains 250 mg of ceftriaxone.
To calculate how many mL are needed for the total dose of 400 mg, we use the following formula:
Volume (mL)=Dose in mg/Concentration in mg/mL=400 mg/250 mg/mL=1.6 mL
1.6 /2 divided doses = 0.8mL
Answer: 0.8mL
Correct Answer is ["0.8"]
Explanation
Step by step calculation:
The desired dose of ketorolac is 12 mg.
The available concentration is 15 mg/mL.
Calculating the volume to administer:
Use the concentration of the medication: 12 mg ÷ 15 mg/mL = 0.8 mL
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