A patient is receiving a secondary infusion of azithromycin 500 mg in 500 mL of normal saline (NS) to be infused over 2 hours. How many mL/hour should the nurse program the infusion pump?
(Enter numerical value only.)
The Correct Answer is ["250"]
To find the answer, we can use the following formula:
(mL/hour) = (mL/minute) x 60
Substituting the given values, we get:
(mL/hour) = (500 / 120) x 60
Simplifying, we get:
(mL/hour) = 4.167 x 60
(mL/hour) = 250
Therefore, the nurse should program the infusion pump to deliver 250 mL/hour of azithromycin in NS to the patient.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["1"]
Explanation
First, we need to find out how many mg of warfarin are in one vial. Since the vial is labeled 5 mg/single-use, we can assume that it contains 5 mg of warfarin.
Next, we need to find out how many mL of solution are in one vial. Since the instructions say to reconstitute with 2.7 mL of sterile water for injection to yield 2 mg/mL, we can use the following formula:
Amount of solution= amount of water + amount of warfarin
Substituting the given values, we get:
Amount of solution = 2.7 + 5 =7.7 mL
Now, we need to find out how many mL of solution contain 2 mg of warfarin, which is the prescribed dose for the patient. We can use the following formula:
mL of solution = mg of warfarin/ concentration of warfarin
Substituting the given values, we get:
mL of solution = 2/2 = 1 mL
Therefore, the nurse should administer 1 mL of solution to the patient.
Correct Answer is ["6"]
Explanation
To find the answer, we can use the following steps:
- Convert the dosage of oxytocin from milliunits/min to units/hour by multiplying by 60
- Calculate the concentration of oxytocin in the IV bag by dividing the amount of oxytocin by the volume of solution
- Divide the dosage of oxytocin by the concentration of oxytocin in the IV bag to get the volume to be delivered
Using these steps, we get:
- (dosage of oxytocin in units/hour) = (2) x (60) = 120 milliunits/hour
- (concentration of oxytocin in IV bag) = (20) / (1000) = 0.02 units/mL
- (volume to be delivered in mL/hour) = (120 x 10^-3) / (0.02) = 6 mL/hour
Therefore, the nurse should program the infusion pump to deliver 6 mL/hour of oxytocin in lactated Ringer's to the patient.
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