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 ["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 ["2722"]
Explanation
Let's convert pounds to grams.
We know that 1 pound= 453.592 grams.
Convert 6 pounds to grams, we multiply:
6 pounds x 453.592 grams/pound = 2721.552 grams
Rounding this to the nearest whole number gives 2722 grams.
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