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 ["2"]
Explanation
Given:
Total daily dose: 2 grams of amoxicillin per day
Number of doses per day: 2 doses
Available tablets: 500 mg tablets
Steps to solve:
Determine the dose per administration:
Each dose will be: 2 g/day ÷ 2 doses/day = 1 g/dose
Convert grams to milligrams:
1 gram = 1000 milligrams
1 g/dose = 1000 mg/dose
Determine the number of tablets per dose:
Find how many 500 mg tablets are needed to make 1000 mg of amoxicillin.
Set up a proportion to solve for the unknown number of tablets (X):
500 mg/tablet = 1000 mg/X tablets
Cross-multiplying gives us:
500 mg x X tablets = 1000 mg x 1 tablet
Simplifying:
500X = 1000
Solving for X:
X = 1000 / 500 = 2 tablets
Correct Answer is ["175"]
Explanation
Given:
Weight of the infant: 3500 g
Prescribed dose: 50 mg/kg
Steps to solve:
Convert weight to kg:
1 g is equal to 0.001 kg.
3500 g x 0.001 kg/g = 3.5 kg
Calculate the dose:
Dose = 50 mg/kg x 3.5 kg = 175 mg
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