A nurse is preparing to infuse 720 mcg/kg/hr of dopamine for a client with low blood pressure. The client weighs 132 lbs, The amount available is 400 mg Ina 250 mL bag of D5W. How many ml/hr will the nurse set the infusion pump? (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 ["27"]
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
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
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
Correct Answer is ["3"]
Explanation
Given:
Prescribed dose: 900 mg of gabapentin per dose
Available tablets: 300 mg capsules
Steps to solve:
Determine the number of capsules per dose:
Find how many 300 mg capsules are needed to make 900 mg of gabapentin.
Set up a proportion to solve for the unknown number of capsules (X):
300 mg/capsule = 900 mg/X capsules
Cross-multiplying gives us:
300 mg x X capsules = 900 mg x 1 capsule
Simplifying:
300X = 900
Solving for X:
X = 900 / 300 = 3 capsules
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