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
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Related Questions
Correct Answer is ["1.5"]
Explanation
Given:
Ordered loading dose of Heparin: 80 units/kg
Patient weight: 95 kg
Concentration of Heparin: 5,000 units/mL
Step 1: Calculate the total loading dose of Heparin:
Total loading dose (units) = Ordered dose (units/kg) x Patient weight (kg)
Total loading dose (units) = 80 units/kg x 95 kg
Total loading dose (units) = 7600 units
Step 2: Calculate the volume to be administered:
Volume (mL) = Total loading dose (units) / Concentration (units/mL)
Volume (mL) = 7600 units / 5000 units/mL
Volume (mL) = 1.52 mL
Step 3: Round to the nearest tenth:
Volume (mL) ≈ 1.5 mL
Correct Answer is ["600"]
Explanation
Given:
Volume of fluid: 200 mL
Infusion time: 20 minutes
Formula:
Flow rate (mL/hr) = Volume (mL) / Time (hr)
Step 1: Convert infusion time from minutes to hours:
Infusion time (hr) = 20 minutes / 60 minutes/hr
Infusion time (hr) = 1/3 hour
Step 2: Calculate the infusion rate in mL/hr:
Flow rate (mL/hr) = 200 mL / (1/3) hr
Flow rate (mL/hr) = 200 mL x (3/1) hr
Flow rate (mL/hr) = 600 mL/hr
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