A 9-year-old child who weighs 66 lb is to receive gentamicin sulfate 2 mg/kg/dose every 8 hours for an Escherichia coli urinary tract infection. How many mg per dose should this child receive? (Enter numeric value only.)
The Correct Answer is ["60"]
Here's how to calculate the gentamicin dosage per dose for the child:
Client weight conversion:
Client weight: 66 lbs
We need the weight in kilograms (kg) for the medication dosage.
Conversion factor: 1 kg = 2.205 lbs
Client weight (kg) = 66 lbs / 2.205 lbs/kg = 30 kg (round to nearest whole number)
Gentamicin dosage:
Prescribed dose: 2 mg/kg/dose (given)
Calculate the total gentamicin amount per dose:
Total dose (mg/dose) = Dose (mg/kg/dose) x Client weight (kg)
Total dose (mg/dose) = 2 mg/kg/dose * 30 kg
Total dose (mg/dose) = 60 mg (round to nearest whole number)
Therefore, the child should receive 60 mg of gentamicin sulfate per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["31"]
Explanation
Here's how to calculate the infusion rate (gtt/min) for the nurse to regulate:
1. We know the following:
Total vancomycin dose: 1500 mg
Volume of solution: 250 mL
Infusion time: 2 hours
IV administration set gtt/mL: 15 gtt/mL
2. We need to find the infusion rate in gtt/min.
Steps:
a. Calculate the concentration of vancomycin in the solution:
Concentration (mg/mL) = Total dose (mg) / Volume (mL)
Concentration (mg/mL) = 1500 mg / 250 mL
Concentration (mg/mL) = 6 mg/mL (round to nearest whole number)
b. Convert infusion time from hours to minutes:
Infusion time (minutes) = Infusion time (hours) x Minutes per hour
Infusion time (minutes) = 2 hours * 60 minutes/hour
Infusion time (minutes) = 120 minutes
c. Calculate the total volume of solution to be infused per minute:
Total volume rate (mL/min) = Total volume (mL) / Infusion time (minutes)
Total volume rate (mL/min) = 250 mL / 120 minutes
Total volume rate (mL/min) = 2.083 mL/min (round to nearest hundredth)
d. Finally, calculate the infusion rate in gtt/min:
Infusion rate (gtt/min) = Volume rate (mL/min) x gtt/mL
Infusion rate (gtt/min) = 2.083 mL/min * 15 gtt/mL
Infusion rate (gtt/min) = 31.25 gtt/min (round to nearest whole number as requested)
Therefore, the nurse should regulate the infusion at approximately 31 gtt/min.
Correct Answer is ["42"]
Explanation
Here's how to calculate the infusion rate (gtt/min) for the nurse to regulate:
1. Volume of azithromycin solution:
Volume = 500 mL (given)
2. Infusion duration:
Duration = 2 hours (given)
3. IV administration set gtt/mL:
Rate (gtt/mL) = 10 gtt/mL (given)
4. We need to find the rate (gtt/min) at which the solution should infuse to deliver the total volume (500 mL) over the specified duration (2 hours).
Steps:
a. Convert infusion duration from hours to minutes:
Duration (minutes) = Duration (hours) x Minutes per hour
Duration (minutes) = 2 hours * 60 minutes/hour
Duration (minutes) = 120 minutes
b. Calculate the total number of drops to be infused:
Total drops = Volume (mL) x Rate (gtt/mL)
Total drops = 500 mL * 10 gtt/mL
Total drops = 5,000 drops
c. Calculate the infusion rate (gtt/min):
Infusion rate (gtt/min) = Total drops / Duration (minutes)
Infusion rate (gtt/min) = 5,000 drops / 120 minutes
Infusion rate (gtt/min) = 41.67 gtt/min (round to nearest whole number as requested)
Therefore, the nurse should regulate the infusion at approximately 42 gtt/min.
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