A nurse is preparing to administer diphenhydramine 40mg IM to a client who has allergies. Available is diphenhydramine injection 50mg/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 ["0.8"]
Given:
Prescribed dose: 40 mg of diphenhydramine
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 = 40 mg/X mL
Cross-multiplying gives us:
50 mg x X mL = 40 mg x 1 mL
Simplifying:
50X = 40
Solving for X:
X = 40 / 50 = 0.8 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["400"]
Explanation
Given:
Total volume: 100 mL
Time: 15 minutes
Steps to solve:
Determine the flow rate in mL/min:
Set up a proportion to solve for the unknown flow rate (X):
100 mL/15 min = X mL/1 min
Cross-multiplying gives us:
100 mL x 1 min = 15 min x X mL
Simplifying:
100 = 15X
Solving for X:
X = 100 / 15 = 6.67 mL/min
Convert to mL/hr:
6.67 mL/min x 60 min/hr = 400 mL/hr
Correct Answer is ["2"]
Explanation
Given:
Prescribed dose: 10 mg of metoclopramide
Available concentration: 5 mg/mL
Steps to solve:
Determine the volume to be administered:
Set up a proportion to solve for the unknown volume (X):
5 mg/mL = 10 mg/X mL
Cross-multiplying gives us:
5 mg x X mL = 10 mg x 1 mL
Simplifying:
5X = 10
Solving for X:
X = 10 / 5 = 2 mL
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