A nurse is preparing to administer hydroxyzine 1 mg/kg IM to a school-age child who weighs 67 lb. Available is hydroxyzine injection 25 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.)
The Correct Answer is ["1.2"]
First, convert the child's weight from pounds to kilograms: 67 lb / 2.205 lb/kg = 30.39 kg
Calculate the total dose of hydroxyzine needed: 1 mg/kg * 30.39 kg = 30.39 mg
Calculate the volume of hydroxyzine to administer: 30.39 mg / 25 mg/mL = 1.2156 mL
Round to the nearest tenth: 1.2156 mL rounded to the nearest tenth is 1.2 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["2.5"]
Explanation
Identify the given information:
Volume of fluoxetine oral solution: ½ tsp
Use the conversion factor:
1 tsp = 4.929 mL
Set up the conversion:
½ tsp x (4.929 mL / 1 tsp)
½ tsp x 4.929 mL/tsp = 2.4645 mL
Round the answer to the nearest tenth:
≈ 2.5 mL
Correct Answer is ["0.4"]
Explanation
Identify the given information:
Dose of ferrous fumarate: 3 mg/kg/day
Weight of the toddler: 22 lb
Concentration of ferrous fumarate drops: 45 mg/0.6 mL
Convert the toddler's weight from pounds to kilograms:
1 lb ≈ 0.453592 kg
Calculate the total daily dose of ferrous fumarate in mg:
Total daily dose = Dose/kg/day x Weight (kg)
Substitute the values:
Total daily dose = 3 mg/kg/day x 22 lb x (0.453592 kg/1 lb)
Total daily dose ≈ 29.97 mg
Calculate the dose per dose (every 8 hours):
Dose per dose = Total daily dose / 3
Substitute the values:
Dose per dose = 29.97 mg / 3
Dose per dose ≈ 9.99 mg
Calculate the volume of ferrous fumarate drops to be administered:
Volume = Dose per dose (mg) / Concentration (mg/mL)
Substitute the values:
Volume = 9.99 mg / (45 mg/0.6 mL)
Volume ≈ 0.133 mL
Round the answer to the nearest tenth:
Volume ≈ 0.1 mL
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