Math Problem-Insulin

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Have a math test tomorrow...

Can someone please do this problem and tell me if I am doing it right?

Order:Insulin 5units/hr

Supply: 125u/50ml

Set the pump at ____________?

Let me know what you get so I can see If I got the right answer.

Thanks!

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Specializes in Case mgmt., rehab, (CRRN), LTC & psych.

I arrived at an answer of 0.03mL per minute, but keep in mind that I am weak at dosage calculations.

1hr/60min. x 50mL/125u x 5u/1hr. = 250/7500 = 0.03mL per minute

Also, 0.03mL per minute is equal to 2mL per hour: 0.03mL x 60 min. = 2mL per hr.

50mL/125u x 5u/1hr = 250/125 = 2mL per hour

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2mls/hr

0.03mls/min

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Specializes in CTICU.

You asked if we can tell you if you're doing it right, but I don't see your answer.... ??

Stock strength: 125u/50ml = 2.5u/ml.

You want to give 5u/hr (2.5u/ml x 2) so you want to give 2mls/hr.

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Sorry... I didn't put my answer! But I did get 2ml/hr

which is the correct answer. I don't know why but I froze during the test and could not figure this out.

I just did it at home and it just seemed to easy, that's why I wanted the answer verified.

Thanks

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We just had out math test for school and the easiest way to set up this problem is to use this formula...

On hand dose (mg, mcg, units) Dose ordered

__________________________ X ____________________

On hand volume (mL, Liters) Volume ordered

Just use that formula and cross multiply to solve for 'X'

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