A client who weighs 60 kg receives a prescription for lorazepam 44 mcg/kg IV to be administer 20 minutes before a scheduled procedure. The medication is available in 2 mg/mL vial. How many mg of lorazepam should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["2.6"]
Calculate the prescribed dose in micrograms:
Dose (mcg) = Prescribed dose (mcg/kg) x Client's weight (kg)
= 44 mcg/kg x 60 kg
= 2640 mcg
Convert the dose from micrograms to milligrams:
Dose (mg) = Dose (mcg) / 1000 mcg/mg
= 2640 mcg / 1000 mcg/mg
= 2.64 mg
Round to the nearest tenth:
Rounded dose = 2.6 mg
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["83"]
Explanation
Total volume to be infused = 1 litre
Convert the total volume from liters to milliliters:
Total volume (mL) = Total volume (liters) x 1000 mL/litre
= 1 litre x 1000 mL/litre
= 1000 mL
Identify the infusion time in minutes:
Infusion time (minutes) = Infusion time (hours) x 60 minutes/hour
= 12 hours x 60 minutes/hour
= 720 minutes
Drop factor of the IV administration set = 60 gtt/mL
Calculate the total number of drops to be infused:
Total drops = Total volume (mL) x Drop factor (gtt/mL)
= 1000 mL x 60 gtt/mL
= 60000 gtt
Calculate the infusion rate in drops per minute (gtt/min):
Infusion rate (gtt/min) = Total drops / Infusion time (minutes)
= 60000 gtt / 720 minutes
≈ 83.33 gtt/minute
Round to the nearest whole number:
Rounded infusion rate = 83 gtt/minute
Correct Answer is ["83"]
Explanation
Formula:
Infusion rate (mL/hour) = Total volume (mL) / Total time (hours)
Convert total volume from liters to milliliters:
1L = 1000mL
2L = 2 liters x 1000 mL/litre
= 2000 mL
Total volume = 2000 mL
Total infusion time in hours:
Total infusion time = 24 hours
Calculate the infusion rate in mL/hour:
Infusion rate (mL/hour) = Total volume (mL) / Total time (hours)
= 2000 mL / 24 hours
≈ 83.33 mL/hour
Round to the nearest whole number:
Rounded infusion rate = 83 mL/hour
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