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 ["63"]
Explanation
Given:
Total volume: 250 mL
Time: 4 hours
Steps to solve:
Determine the flow rate:
Set up a proportion to solve for the unknown flow rate (X):
250 mL/4 hr = X mL/1 hr
Cross-multiplying gives us:
250 mL x 1 hr = 4 hr x X mL
Simplifying:
250 = 4X
Solving for X:
X = 250 / 4 = 62.5 mL/hr
Round to the nearest whole number:
63 mL/hr.
Correct Answer is ["2"]
Explanation
Given:
Total daily dose: 300 mg of propylthiouracil per day
Number of doses per day: 3 doses
Available tablets: 50 mg tablets
Steps to solve:
Determine the dose per administration:
Since the daily dose is divided into three doses, each dose will be: 300 mg/day ÷ 3 doses/day = 100 mg/dose
Determine the number of tablets per dose:
Find how many 50 mg tablets are needed to make 100 mg of propylthiouracil.
Set up a proportion to solve for the unknown number of tablets (X):
50 mg/tablet = 100 mg/X tablets
Cross-multiplying gives us:
50 mg x X tablets = 100 mg x 1 tablet
Simplifying:
50X = 100
Solving for X:
X = 100 / 50 = 2 tablets
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