A nurse is preparing to infuse 4 units/hr of regular insulin for a client with diabetic ketoacidosis (DKA). The amount available is 50 units in a 100 mL bag of 0.9 sodium chloride. How will the nurse set up the flow rate (mL/hr)? (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 ["8"]
Given:
Total units of insulin: 50 units
Total volume: 100 mL
Desired infusion rate: 4 units/hr
Determine the infusion time:
If the nurse is infusing 4 units/hr and has 50 units total, the infusion time will be:
50 units / 4 units/hr = 12.5 hours
Calculate the flow rate in mL/hr:
Total volume of 100 mL needs to be infused over 12.5 hours.
The flow rate is:
100 mL / 12.5 hr = 8 mL/hr
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.8"]
Explanation
Given:
Prescribed dose: 30 mg of enoxaparin
Available concentration: 40 mg/mL
Steps to solve:
Determine the volume to be administered:
Set up a proportion to solve for the unknown volume (X):
40 mg/mL = 30 mg/X mL
Cross-multiplying gives us:
40 mg x X mL = 30 mg x 1 mL
Simplifying:
40X = 30
Solving for X:
X = 30 / 40 = 0.75 mL
Round off to the nearest tenth:
0.8mL
Correct Answer is ["8"]
Explanation
Given:
Total units of insulin: 50 units
Total volume: 100 mL
Desired infusion rate: 4 units/hr
Determine the infusion time:
If the nurse is infusing 4 units/hr and has 50 units total, the infusion time will be:
50 units / 4 units/hr = 12.5 hours
Calculate the flow rate in mL/hr:
Total volume of 100 mL needs to be infused over 12.5 hours.
The flow rate is:
100 mL / 12.5 hr = 8 mL/hr
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