A continuous infusion of heparin 10 unit/kg/hour is prescribed for a client with deep vein thrombosis (DVT) who weighs 165 pounds. The IV bag is labeled Heparin Sodium 25,000 Units in 5% Dextrose Injection 500 mL The nurse should program the Infusion pump to deliver how many mL/hour? (Enter numeric value only.)
The Correct Answer is ["15"]
Given:
Ordered infusion rate: 10 units/kg/hour
Patient weight: 165 pounds
Concentration of Heparin: 25,000 units in 500 mL (50 units/mL)
Step 1: Convert patient weight from pounds to kilograms:
1 pound (lb) = 0.453592 kilograms (kg)
Patient weight in kg = 165 lbs x 0.453592 kg/lb = 74.8 kg
Step 2: Calculate the total dose of Heparin in units/hour:
Total dose (units/hour) = Ordered dose (units/kg/hour) x Patient weight (kg)
Total dose (units/hour) = 10 units/kg/hour x 74.8 kg
Total dose (units/hour) = 748 units/hour
Step 3: Calculate the infusion rate in mL/hour:
Infusion rate (mL/hour) = Total dose (units/hour) / Concentration (units/mL)
Infusion rate (mL/hour) = 748 units/hour / 50 units/mL
Infusion rate (mL/hour) = 14.96 mL/hour
Step 4: Round to the nearest whole number:
Infusion rate (mL/hour) ≈ 15 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 ["4"]
Explanation
Given:
Ordered dose of amoxicillin/clavulanate: 2 g amoxicillin + 125 mg clavulanate every 12 hours
Available tablets: 1000 mg amoxicillin + 62.5 mg clavulanate extended-release tablets
Step 1: Determine the total daily dose of amoxicillin/clavulanate:
Since the medication is given every 12 hours, there are 2 administrations per day.
Total daily dose (amoxicillin) = Dose per administration (amoxicillin) x Number of administrations per day
Total daily dose (amoxicillin) = 2 g/dose x 2 doses/day
Total daily dose (amoxicillin) = 4 g/day = 4000 mg/day
Total daily dose (clavulanate) = Dose per administration (clavulanate) x Number of administrations per day
Total daily dose (clavulanate) = 125 mg/dose x 2 doses/day
Total daily dose (clavulanate) = 250 mg/day
Step 2: Calculate the number of tablets required per day:
Number of tablets/day = Total daily dose (amoxicillin) / Strength of amoxicillin per tablet
Number of tablets/day = 4000 mg/day / 1000 mg/tablet
Number of tablets/day = 4 tablets/day
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