The healthcare provider prescribes regular insulin 10 units/hour IV. The pharmacy provides a solution of normal saline 250 mL with 125 units regular insulin. How many hours should the IV infuse? (Enter numeric value only. if rounding is required, round to the nearest whole number.)
The Correct Answer is ["13"]
Given:
Total insulin in solution: 125 units
Ordered infusion rate: 10 units/hour
Step 1: Calculate the total infusion time:
Total infusion time (hours) = Total insulin (units) / Infusion rate (units/hour)
Total infusion time (hours) = 125 units / 10 units/hour
Total infusion time (hours) = 12.5 hours
Step 2: Round to the nearest whole number:
Total infusion time (hours) ≈ 13 hours
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.4"]
Explanation
Given:
Ordered dose of methylprednisolone succinate: 1.5 mg/kg/day IV in divided doses every 6 hours
Child's weight: 42 kg
Concentration of methylprednisolone succinate: 40 mg/mL
Step 1: Calculate the total daily dose of methylprednisolone succinate:
Total daily dose (mg) = Ordered dose (mg/kg/day) x Child's weight (kg)
Total daily dose (mg) = 1.5 mg/kg/day x 42 kg
Total daily dose (mg) = 63 mg/day
Step 2: Calculate the dose per administration:
Since the medication is given every 6 hours, there are 4 administrations per day.
Dose per administration (mg) = Total daily dose (mg) / Number of administrations per day
Dose per administration (mg) = 63 mg/day / 4 administrations/day
Dose per administration (mg) = 15.75 mg
Step 3: Calculate the volume to be administered per dose:
Volume (mL) = Dose per administration (mg) / Concentration (mg/mL)
Volume (mL) = 15.75 mg / 40 mg/mL
Volume (mL) = 0.39375 mL
Step 4: Round to the nearest tenth:
Volume (mL) ≈ 0.4 mL
Correct Answer is ["38"]
Explanation
Given:
Volume of fluid: 75 mL
Infusion time: 30 minutes
Drop factor: 15 gtt/mL
Formula:
Flow rate (gtt/min) = (Volume (mL) / Time (min)) x Drop factor (gtt/mL)
Step 1: Calculate the infusion rate in mL/min:
Infusion rate (mL/min) = Volume (mL) / Time (min)
Infusion rate (mL/min) = 75 mL / 30 min
Infusion rate (mL/min) = 2.5 mL/min
Step 2: Calculate the flow rate in gtt/min:
Flow rate (gtt/min) = Infusion rate (mL/min) x Drop factor (gtt/mL)
Flow rate (gtt/min) = 2.5 mL/min x 15 gtt/mL
Flow rate (gtt/min) = 37.5 gtt/min
Step 3: Round to the nearest whole number:
Flow rate (gtt/min) ≈ 38 gtt/min
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