A client receives a prescription for oxytocin 2 millunits/min IV for labor augmentation. The lV bag contains oxytocin 20 units in 1 liter of lacated Ringer's. . How many mL/hour should the nurse program the infusion pump to deliver? (Enter numerical value only.)
The Correct Answer is ["6"]
Given:
Ordered dose of Oxytocin: 2 milliunits/min
Concentration of Oxytocin: 20 units in 1 liter (1000 mL) = 20 units/1000 mL = 0.02 units/mL
Step 1: Convert milliunits to units:
Ordered dose (units/min) = Ordered dose (milliunits/min) / 1000 milliunits/unit
Ordered dose (units/min) = 2 milliunits/min / 1000 milliunits/unit
Ordered dose (units/min) = 0.002 units/min
Step 2: Calculate the infusion rate in units/hour:
Infusion rate (units/hour) = Ordered dose (units/min) x 60 minutes/hour
Infusion rate (units/hour) = 0.002 units/min x 60 minutes/hour
Infusion rate (units/hour) = 0.12 units/hour
Step 3: Calculate the infusion rate in mL/hour:
Infusion rate (mL/hour) = Infusion rate (units/hour) / Concentration (units/mL)
Infusion rate (mL/hour) = 0.12 units/hour / 0.02 units/mL
Infusion rate (mL/hour) = 6 mL/hour
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 ["0.5"]
Explanation
Given:
Ordered dose of interferon beta-1b: 0.125 mg
Vial strength: 0.3 mg
Reconstitution volume: 1.2 mL
Step 1: Determine the concentration of the reconstituted solution:
Concentration (mg/mL) = Total amount of medication (mg) / Volume of solution (mL)
Concentration (mg/mL) = 0.3 mg / 1.2 mL
Concentration (mg/mL) = 0.25 mg/mL
Step 2: Calculate the volume to be administered:
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume (mL) = 0.125 mg / 0.25 mg/mL
Volume (mL) = 0.5 mL
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