DOSAGE CALCULATIONS

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Mar 4, '13 by lmustudent

Ok, I have worked this doseage calculation a hundred times. Can someone please tell me what I am doing wrong.

Administer Gentamycin 80mg in 100ml over 45 minutes. How would you set the pump?

I have set it up as such

100:45::x:60
45x=6000
6000/45=133.333
133.3ml/hr

however the answer key is saying 13.3ml/hr
I have never had any issues and makes me think answer key is incorrect or I am flat out doing something incorrect.

Please help!!
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6 Comments so far...
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Mar 4, '13 by KelRN215

The answer key is wrong. If you have 100 mL and you run it at 13.3 mL/hr, it is going to take 7 1/2 hrs to infuse that medication.

Your answer is correct.

Esme12 likes this.
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Mar 4, '13 by lmustudent

thank you so much.
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Mar 4, '13 by Esme12 Asst. Admin

Yeah...they key is wrong.

lmustudent likes this.
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Mar 4, '13 by lmustudent

Thanks for looking at it. I was making sure I just didn't read the question wrong.
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Mar 4, '13 by Esme12 Asst. Admin

When you look at it you have 100cc's of fluid that need to be infused in less than an hour so.....you automatically KNOW that the rate need to be faster than 100cc/hour. So your answer needs to be faster than 100cc/hr......133.3cc/hr is the answer
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Mar 7, '13 by Itspossible

I came up with 133.3 mL/hr so the answer key is incorrect.

This is how I set it up:
100 mL * 60 min divided by 45 min

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