A patient is receiving 750 ml of NSS at 50 mL/hr. How many hours will the bag last?
The Correct Answer is ["15"]
Identify the total volume and the flow rate:
Total volume: 750 mL of NSS
Flow rate: 50 mL/hr
Use the formula:
Time (in hours) = Total Volume / Flow Rate
Plug in the values and calculate:
Time = 750 mL / 50 mL/hr
Time = 15 hours
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Determine the remaining volume and the flow rate:
Remaining volume: 700 mL
Flow rate: 100 mL/hour
Calculate the time it will take to infuse the remaining volume:
Time (hours) = Remaining Volume / Flow Rate
Time = 700 mL / 100 mL/hour
Time = 7 hours
Determine the time the bag will be empty:
The nurse receives the report at 0700 (7:00 AM).
Add the 7 hours to 0700: 0700 + 7 hours = 1400
Correct Answer is ["9.5"]
Explanation
Identify the Desired Dose:
The client needs 950 units of Heparin per hour.
Identify the Available Concentration:
The pharmacy provides Heparin at a concentration of 25,000 units in 250 mL of IV fluid.
Set up the Proportion:
(Desired Dose / Available Concentration) = (Rate (mL/hr) / Volume (mL))
(950 units / 25,000 units) = (X mL / 250 mL)
Solve for X (the Rate):
Cross-multiply: 950 units x 250 mL = 25,000 units x X mL
237,500 = 25,000X
X = 237,500 / 25,000
X = 9.5 mL/hr
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