A nurse is preparing to administer 250 mg of an antibiotic IM. Available is 3 g/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.4"]
Desired dose = 250 mg
Available concentration = 3 g/5 mL = 600 mg/5 mL = 120 mg/mL
Volume to administer = Desired dose / Concentration = 250 mg / 120 mg/mL = 2.08 mL
Rounded to the nearest tenth = 0.4 mL
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Related Questions
Correct Answer is ["75"]
Explanation
Step-by-Step Calculation
Understanding the Problem
We need to administer 100 mL of cefazolin over 20 minutes.
The drop factor of the tubing is 15 gtt/mL.
We need to calculate the drip rate in gtt/min.
Calculations
Calculate the infusion rate in mL/min:
Infusion rate (mL/min) = Total volume (mL) / Infusion time (min)
Infusion rate = 100 mL / 20 min = 5 mL/min
Calculate the drip rate:
Drip rate (gtt/min) = Infusion rate (mL/min) X Drop factor (gtt/mL)
Drip rate = 5 mL/min X 15 gtt/mL = 75 gtt/min
The nurse should set the IV infusion to deliver 75 gtt/min.
Correct Answer is ["75"]
Explanation
Step-by-Step Calculation
Understanding the Problem
We need to administer 1800 mL of TPN over 24 hours.
We need to calculate the infusion rate in mL/hr.
Calculations
Calculate the infusion rate:
Infusion rate (mL/hr) = Total volume (mL) / Time (hr)
Infusion rate = 1800 mL / 24 hr = 75 mL/hr
Answer
The nurse should set the IV pump to deliver 75 mL/hr.
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