A nurse is preparing to administer ampicillin 150mg IM to an infant. Available is ampicillin injection 250mg/mL. How many mL should the nurse administer? Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.
The Correct Answer is ["0.6"]
Given:
Prescribed dose: 150 mg of ampicillin
Available concentration: 250 mg/mL
Steps to solve:
Determine the volume to be administered:
Set up a proportion to solve for the unknown volume (X):
250 mg/mL = 150 mg/X mL
Cross-multiplying gives us:
250 mg x X mL = 150 mg x 1 mL
Simplifying:
250X = 150
Solving for X:
X = 150 / 250 = 0.6 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1.5"]
Explanation
Given:
Prescribed dose: 75 mg of iron dextran
Available concentration: 50 mg/mL
Steps to solve:
Determine the volume to be administered:
Set up a proportion to solve for the unknown volume (X):
50 mg/mL = 75 mg/X mL
Cross-multiplying gives us:
50 mg x X mL = 75 mg x 1 mL
Simplifying:
50X = 75
Solving for X:
X = 75 / 50 = 1.5 mL
Correct Answer is ["2"]
Explanation
Given:
Prescribed dose: 100 mcg of fentanyl
Available concentration: 0.05 mg/mL
Steps to solve:
Convert mcg to mg:
1 mg = 1000 mcg
So, 100 mcg = 0.1 mg
Determine the volume to be administered:
Set up a proportion to solve for the unknown volume (X):
0.05 mg/mL = 0.1 mg/X mL
Cross-multiplying gives us:
0.05 mg x X mL = 0.1 mg x 1 mL
Simplifying:
0.05X = 0.1
Solving for X:
X = 0.1 / 0.05 = 2 mL
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