Indulin Math Problem

sunnysideup09 · Nov 7, 2009

Doing this in dimensional analysis:

ml/hr is what you what.

ml/hr = 250ml/125 units x 0.1 units/kg/hr x 132 lbs x 1 kg/2.2 lbs = 12 ml/hr

You would set the pump at 12 ml/hr

tlc2u · Nov 7, 2009

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

[color=white]..............hr

250 ml x 6 u = 1500 = 12 ml

125 u[color=white]......hr[color=white]......125[color=white]........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.