A nurse is preparing to administer cefazolin 835 mg IM to an adolescent. The amount available is 330 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 ["2.5"]
Identify the given information:
Dose of cefazolin: 835 mg
Concentration of cefazolin: 330 mg/mL
Calculate the volume of cefazolin to be administered:
Volume = Dose (mg) / Concentration (mg/mL)
Substitute the values:
Volume = 835 mg / 330 mg/mL
Calculate the result:
Volume ≈ 2.53 mL
Round the answer to the nearest tenth:
Volume ≈ 2.5 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["10"]
Explanation
Identify the given information:
Dose of methylphenidate: 10 mg
Concentration of methylphenidate oral solution: 5 mg/tsp
Calculate the volume of methylphenidate to be administered:
Volume = Dose (mg) / Concentration (mg/tsp)
Substitute the values:
Volume = 10 mg / 5 mg/tsp
Calculate the result:
Volume = 2 tsp
Convert tsp to mL:
1 tsp ≈ 4.929 mL
Calculate the volume in mL:
Volume = 2 tsp x 4.929 mL/tsp
Calculate the result:
Volume ≈ 9.858 mL
Round the answer to the nearest whole number:
Volume ≈ 10 mL
Correct Answer is ["120"]
Explanation
Step-by-Step Solution:
Determine the total infusion time in hours.
The infusion time is 20 minutes.
There are 60 minutes in an hour.
The infusion time in hours = 20 minutes / 60 minutes/hour = 0.3333 hours.
Calculate the infusion rate in mL/hr.
The total volume to be infused is 40 mL.
The infusion time is 0.3333 hours.
The infusion rate = 40 mL / 0.3333 hours = 120 mL/hr.
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