A nurse is preparing to infuse 6 units/hr of regular Insulin for a client with diabetic ketoacidosis (DKA). The amount available is 100 unit in a 100 ml bag of 0.9 sodium chloride. How will the nurse set up the flow rate mL/hrl? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["6"]
Given:
Total units of insulin: 100 units
Total volume: 100 mL
Desired infusion rate: 6 units/hr
Steps to solve:
Determine the infusion time:
If the nurse is infusing 6 units/hr and has 100 units total, the infusion time will be:
100 units / 6 units/hr = 16.67 hours (approximately 17 hours)
Calculate the flow rate in mL/hr:
Total volume of 100 mL needs to be infused over 17 hours.
The flow rate is:
100 mL / 17 hr = 5.88 mL/hr
Round to the nearest whole number:
6 mL/hr.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["6"]
Explanation
Given:
Total units of insulin: 100 units
Total volume: 100 mL
Desired infusion rate: 6 units/hr
Steps to solve:
Determine the infusion time:
If the nurse is infusing 6 units/hr and has 100 units total, the infusion time will be:
100 units / 6 units/hr = 16.67 hours (approximately 17 hours)
Calculate the flow rate in mL/hr:
Total volume of 100 mL needs to be infused over 17 hours.
The flow rate is:
100 mL / 17 hr = 5.88 mL/hr
Round to the nearest whole number:
6 mL/hr.
Correct Answer is ["27"]
Explanation
Given:
Prescribed dose: 720 mcg/kg/hr
Client weight: 132 lbs
Total volume: 250 mL
Total dopamine: 400 mg
Steps to solve:
Convert weight to kg:
1 lb= 0.453592 kg.
Multiply: 132 lbs x 0.453592 kg/lb = 59.9 kg (rounded to one decimal place)
Calculate the total dopamine dose per hour:
Total dose/hr = 720 mcg/kg/hr x 59.9 kg = 43128 mcg/hr = 43.128 mg/hr
Calculate the infusion rate in mL/hr:
Find how many mL of the solution contains 43.128 mg of dopamine.
Set up a proportion to solve for the unknown volume (X):
400 mg/250 mL = 43.128 mg/X mL
Cross-multiplying gives us:
400 mg x X mL = 43.128 mg x 250 mL
Simplifying:
400X = 10782
Solving for X:
X = 10782 / 400 = 26.955 mL/hr
Round off:
27 mL/hr
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