A nurse is preparing to administer ceftriaxone 50 mg/kg IM to a toddler who weighs 22 Ib. The amount available is ceftriaxone 350 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 ["1.4"]
Identify the given information:
Dose of ceftriaxone: 50 mg/kg
Weight of the toddler: 22 lb
Concentration of ceftriaxone: 350 mg/mL
Convert the toddler's weight from pounds to kilograms:
1 lb ≈ 0.453592 kg
Calculate the total dose of ceftriaxone in mg:
Total dose = Dose/kg x Weight (kg)
Substitute the values:
Total dose = 50 mg/kg x 22 lb x (0.453592 kg/1 lb)
Total dose ≈ 498.95 mg
Calculate the volume of ceftriaxone to be administered:
Volume = Total dose (mg) / Concentration (mg/mL)
Substitute the values:
Volume = 498.95 mg / 350 mg/mL
Volume ≈ 1.42 mL
Round the answer to the nearest tenth:
Volume ≈ 1.4 mL
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["3"]
Explanation
Identify the given information:
Dose of azithromycin: 10 mg/kg
Weight of the toddler: 27 lb
Concentration of azithromycin suspension: 200 mg/5 mL
Convert the toddler's weight from pounds to kilograms:
1 lb ≈ 0.453592 kg
Calculate the total dose of azithromycin in mg:
Total dose = Dose/kg x Weight (kg)
Substitute the values:
Total dose = 10 mg/kg x 27 lb x (0.453592 kg/1 lb)
Calculate the result:
Total dose ≈ 122.47 mg
Calculate the volume of azithromycin suspension to be administered:
Volume = Total dose (mg) / Concentration (mg/mL)
Substitute the values:
Volume = 122.47 mg / (200 mg/5 mL)
Calculate the result:
Volume ≈ 3.06 mL
Round the answer to the nearest whole number:
Volume ≈ 3 mL
Correct Answer is ["42"]
Explanation
Identify the given information:
Volume of lactated Ringer's solution: 250 mL
Infusion time: 6 hours
Calculate the infusion rate in mL/hr:
Infusion rate = Volume / Time
Substitute the values:
Infusion rate = 250 mL / 6 hr
Calculate the result:
Infusion rate ≈ 41.67 mL/hr
Round the answer to the nearest whole number:
Infusion rate ≈ 42 mL/hr
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