A nurse is reviewing a new prescription for propranolol 20 mg PO four times daily for a client who has premenstrual migraine headaches. Available is propranolol solution 4 mg/mL. The nurse should recognize that the client should take how many mL per dose? (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 ["5"]
Given:
Prescribed dose: 20 mg of propranolol per dose
Available concentration: 4 mg/mL
Steps to solve:
Determine the volume to be administered:
Set up a proportion to solve for the unknown volume (X):
4 mg/mL = 20 mg/X mL
Cross-multiplying gives us:
4 mg x X mL = 20 mg x 1 mL
Simplifying:
4X = 20
Solving for X:
X = 20 / 4 = 5 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.6"]
Explanation
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
Correct Answer is ["3.5"]
Explanation
Convert the weight from grams to kilograms.
1000 grams = 1 kilogram.
To convert 3500 grams to kilograms, we divide:
3500 grams / 1000 grams/kg = 3.5 kg
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