A primary healthcare provider prescribes a medication of 1250 mg diluted in 1000 mL. A nurse starts the infusion at 09:20 at a rate of 250 mL/hr. What time will the intravenous (IV) infusion be completed?
11:20
12:20
13:20
14:20
The Correct Answer is C
To calculate the total infusion time, we need to divide the total volume to be infused by the infusion rate:.
Total infusion time = Total volume to be infused / Infusion rate.
In this case, the total volume to be infused is 1000 mL, and the infusion rate is 250 mL/hr:.
Total infusion time = 1000 mL / 250 mL/hr. Total infusion time = 4 hours.
Therefore, the infusion will be completed 4 hours after it was started at 09:20, which would be at 13:20.
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Related Questions
Correct Answer is D
Explanation
A. 0.04 mg
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This is far too small.
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It might come from a miscalculation involving the concentration (1 mg/mL) and volume (5 mL), but incorrectly dividing again by 100.
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Not clinically reasonable because the patient would barely receive any drug.
B. 0.25 mg
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This is also incorrect.
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It could result from mistakenly dividing 5 mg by 20 minutes instead of 2 minutes.
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Again, far below the actual ordered rate.
C. 3.75 mg
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This is incorrect but closer.
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It might come from a misstep like subtracting 1.25 mg from the correct answer (2.5 mg) or misusing the concentration.
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Still not the right calculation.
D. 2.5 mg
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Correct answer.
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Direct calculation: 5 mg ÷ 2 minutes = 2.5 mg/min.
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Matches the ordered dose and administration time.
Correct Answer is B
Explanation
To calculate the flow rate in mL/hr for a continuous infusion, we need to divide the total volume to be infused by the total time of infusion, and then convert the units as necessary.
In this case, the total volume is 2.5 L, which is equivalent to 2500 mL (1 L = 1000 mL), and the total time is 15 hours.
Flow rate = Total volume to be infused / Total time of infusion Flow rate = 2500 mL / 15 hours
Flow rate = 166.67 mL/hr
Therefore, the flow rate for continuous infusion of 0.9% sodium chloride solution in this case is 166.67 mL/hr.
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