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 ["60"]
Explanation
Given:
Ordered dose: 25 mL PO every 6 hours PRN
Medication label: "Acetaminophen and Codeine Phosphate Oral Solution, USP: 120/12 mg per 5 mL"
Step 1: Determine the concentration of codeine in the solution:
Concentration of Codeine = Amount of Codeine / Volume of Solution
Concentration of Codeine = 12 mg / 5 mL
Concentration of Codeine = 2.4 mg/mL
Step 2: Calculate the amount of codeine per dose:
Amount of Codeine per Dose = Concentration of Codeine x Volume per Dose
Amount of Codeine per Dose = 2.4 mg/mL x 25 mL
Amount of Codeine per Dose = 60 mg
Correct Answer is ["0.7"]
Explanation
Given:
Ordered dose of Filgrastim: 410 mcg SUBQ every day
Concentration of Filgrastim: 600 mcg/mL
Step 1: Set up the proportion:
Desired dose (mcg) / Volume to administer (mL) = Concentration (mcg/mL)
Step 2: Substitute the values:
410 mcg / Volume = 600 mcg/mL
Step 3: Solve for the unknown volume:
Volume = 410 mcg / (600 mcg/mL)
Volume = 410 mcg x (1 mL / 600 mcg)
Volume = 0.6833 mL
Step 4: Round to the nearest tenth:
Volume ≈ 0.7 mL
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