A physician gives the following order: "Infuse 0.9% sodium chloride solution, 2.5 L over 15 hours." What is the mL/hr flow rate for continuous infusion?
41.67 mL/hr
166.67 mL/hr
250 mL/hr
1000 mL/hr
The Correct Answer is B
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
To calculate the rate per hour, divide the amount of magnesium sulfate to be administered by the concentration of magnesium sulfate in the IV bag:
6 grams ÷ 40 grams = 0.15
Then, multiply the result by the volume of the IV bag, which is usually 1000 mL: 0.15 x 1000 mL = 150 mL
This is the amount of fluid that contains 6 grams of magnesium sulfate. To administer this amount over 30 minutes, multiply by 2 to get the rate per hour:
150 mL x 2 = 300 mL/hr.
Correct Answer is D
Explanation
A. 0.04 mg
-
This is far too small.
-
It might come from a miscalculation involving the concentration (1 mg/mL) and volume (5 mL), but incorrectly dividing again by 100.
-
Not clinically reasonable because the patient would barely receive any drug.
B. 0.25 mg
-
This is also incorrect.
-
It could result from mistakenly dividing 5 mg by 20 minutes instead of 2 minutes.
-
Again, far below the actual ordered rate.
C. 3.75 mg
-
This is incorrect but closer.
-
It might come from a misstep like subtracting 1.25 mg from the correct answer (2.5 mg) or misusing the concentration.
-
Still not the right calculation.
D. 2.5 mg
-
Correct answer.
-
Direct calculation: 5 mg ÷ 2 minutes = 2.5 mg/min.
-
Matches the ordered dose and administration time.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.