A physician orders Gentamycin 1.5 mg/kg/q8h IVPB in 150 mL NS for a patient who weighs...

A physician orders Gentamycin 1.5 mg/kg/q8h
IVPB in 150 mL NS for a patient who weighs
148 lb. The infusion is to be infused at 25
gtts/min. The drop factor is 20 gtts/mL.
How many milligrams of Gentamycin should this
patient receive?
How long will it take for this medication to be
infused in minutes?
What total amount of Gentamycin will be infused
daily?
How many milligrams will the patient receive in
45 minutes?

Solutions

Expert Solution

A. The patient should receive 100.90 milligrams of Gentamicin.

B. It will take 120 minutes for the medication to be infused.

C. The total amount of Gentamycin that will be infused

daily is 302.7 milligrams.

D. The patient will be able to receive 37.69 milligrams of medication in 45 minutes.

Explanation:

A) In order to determine how many milligrams of Gentamicin the patient should receive, convert the patient's weight to kg first.

148lbs÷2.2lbs/kg= 67.27kg

67.27kg*1.5 mg/kg= 100.90mg

B. In order to determine how many minutes will it take for this medication to be infused, first solve for the ml/min.

25gtts/min÷20gtts/ml= 1.25ml/min

Next, divide the total volume by the ml/min.

150ml÷1.25ml/min= 120minutes

C. In order to determine the total amount of medication to be infused daily(24 hours), take note of your answer in A. It is administered every 8 hours.

24hours÷8 hours= 3

The medication will be administered 3 times a day so,

100.90mg *3= 302.7mg

D. In order to determine how many milligrams will the patient receive in 45 minutes,first determine how many milligrams of medication is there in 1 ml of the IV solution.

100.90mg ÷150ml= 0.67mg/ml

Next, determine how many ml will be delivered in 1 min.

25gtts/min÷20gtts/ml= 1.25ml/min

Then, multiply by 45 min.

1.25ml/min.*45min= 56.25ml

Lastly, solve for the equivalent of 56.25 ml in mg.

56.25ml*0.67mg/ml= 37.69mg

Nightingale answered 1 year ago

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