Re: Indulin Math Problem Originally Posted by cyncopia 
You have a patient who is being admitted for DKA with blood sugars in the 600’s. The orders are to start an insulin drip at 0.1 units/kg/hour. The patient weighs 132 pounds and the concentration of the insulin drip is 125 units in 250 ml. What rate will you set your pump This is what I have so far 132ibs/2.2= 60 kg 60kg*0.1u/1kg = 6units/hour Our ordered dose - 0.1un/kg/hour Our available form - 250ml Our available dose - 125unit Our Patients weight - 60kg un 0.1un 60kg 1 kg 1 = 6units ml 250ml 6u 60kg 1 60min 1mg hr 125un min 1 1hr 1000u??? Thanks!!
I can't figure out what method you are using to do your math (Ratio and proportion, formula, or dimensional analysis) but I can try to explain from what you have listed above. (Also I explained this in dimensional analysis as a reply to your other post on this. Take a look at the responses to that post as well.)
Ok it looks like you figured out in order to give 0.1U/kg/hr you would need to give 6U/hr. Now you would use that figure to determine how many mls/hr to set the pump.
If you know that you need to give 6Uhr and you have 125U in 250mls then it is a simple one step problem.
You want
ml so start with your ml on top
..............hr
250 ml X
6 U =
1500 =
12 ml
125
U......hr......125........hr
When I took math in nursing school we were timed on our tests. I had to learn to do dimensional analysis method because it was the quickest method for me and it works for all my dosage calculations.
Also I noticed in the information you listed above that you have 60 minutes. Minutes would be important if this problem was asking for gtt/minute, but as it is asking for mls/hr. then 60 minutes is not even needed.
Hope this helps.
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