A physician gives the following order: "Infuse LR, 500 mL over 2 hours."
At what rate should the nurse set the IV pump to deliver this infusion (mL/hr)?
100 mL/hr
250 mL/hr
500 mL/hr
1000 mL/hr
The Correct Answer is B
To calculate the infusion rate in mL/hr, we need to divide the total volume to be infused by the time for infusion and convert the units appropriately.
First, we need to convert the time of infusion from hours to minutes, since most IV pumps use minutes as the time unit.
2 hours x 60 minutes/hour = 120 minutes Next, we can calculate the infusion rate:
500 mL ÷ 120 minutes = 4.17 mL/minute
To convert mL/minute to mL/hour, we multiply by 60:
4.17 mL/minute x 60 minutes/hour = 250 mL/hour
Therefore, the correct answer is B. 250 mL/hr. The nurse should set the IV pump to deliver the LR infusion at a rate of 250 mL/hr to infuse 500 mL over 2 hours.
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Related Questions
Correct Answer is A
Explanation
The infusion was started at 06:57 and completed at 15:45, which is a total time of: 15 hours and 45 minutes - 6 hours and 57 minutes = 8 hours and 48 minutes
To calculate the flow rate, we need to know the total amount of fluid infused and divide it by the total time of infusion:
1 L = 1000 mL
Total time of infusion = 8 hours and 48 minutes = 528 minutes Flow rate = Total amount of fluid infused / Total time of infusion Flow rate = 1000 mL / 528 minutes
Flow rate = 1.89394 mL/min
To convert mL/min to mL/hr, we multiply by 60:
Flow rate = 1.89394 mL/min x 60 min/hr Flow rate = 113.6364 mL/hr
Therefore, the flow rate of infusion in this situation is approximately 114 mL/hr, which corresponds to option A.
Correct Answer is B
Explanation
If one dose of medication is 25 mg and each vial contains 50 mg of medication, then each vial contains two doses..
To calculate the number of vials required for 5 days of treatment, we first need to calculate the total number of doses required. Since the client requires two injections per day, the total number of doses required for 5 days would be:.
Total number of doses = 2 doses/day x 5 days. Total number of doses = 10 doses.
Since each vial contains two doses, we need a total of 10/2 = 5 vials for 5 days of treatment..
Therefore, the nurse would need 5 vials of the medication for 5 days of treatment for the client.
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