A 70kg patient is ordered a GTN infusion to commence at a rate of 0.2
micrograms per kilogram per minute.
The concentration of the prepared infusion solution is 100 micrograms
per ml.
At what rate should the infusion run in mls per hour via an infusion
pump?

Hi aquarius21-ga,

We know that the rate is "0.2 micrograms per kilogram per minute", so
let's convert this into ml/hour.

Since the patient weighs 70kg, we can convert the rate into "70*0.2
micrograms per minute" or "14 micrograms per minute" .

100 micrograms equals 1ml, so 1 micrograms equals 1/100 (=0.01) ml and
thus 14 micrograms equals 14*0.01=0.14 ml. In other words, the rate
can be rewritten as "0.14ml per minute".

Finally we need to convert this rate (ml/min) into ml/hour. Since 60
minutes go into one hour, the rate is equal to "60*0.14 ml per hour",
so the answer to your question is:

The infusion should run at a rate of 8.4ml/hour.

If you have any questions, feel free to request a clarification.

Sincerely,

rhansenne-ga.

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