# Dosage Calculations

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I am in a desperate situation. I thought I was getting my calculations correctly and today I got back my math results and i got a 70% I am so disappointed I dont know what to do. On my first exam I received an 80%.

My professor said that if i get above 95% on my final (which is next week) I may be able to average a b+ or a- , but it will all depend on the overall average, if he curves grades or not. I went and bought 2 self help books on calculations .... My question is ..... do you think it is humanly possible to ingest all this info by next week (exactly a week from today)! I am having problems with the drips and the three step conversions. Is there a website that can help me? To top it off my professor sucks, so what I have learned, I have learned on my own. I am so frustrated, so much so, that it is getting harder and harder for me to pick up a book .....sorry for venting

Hi,

Some of the info you don't use. You need to do the conversion lbs to kg as the problem states 0.02 mg per kg per 24 hours.

Patient weighs 35lbs so divide by 2.2 to get kg = 15.9

Now take 0.02 mg multiply by the 15.9 = .318

It is asking for dose b.i.d so divide .318 by 2= .159

Round to .16

I use one formula for all of my math calc and found this to be the easiest. Remember you are always gonna solve for the unknown, so for drips this is what you do

120 ml = ml

------ -------

60 min gtt

cross out the ml and then you have the gtt/min.

60 min = 120 gtt

60 min = 120 gtt

-------

60 min

= 2 gtt/min

I hope this helps

Specializes in ORTHOPAEDICS-CERTIFIED SINCE 89.

The problem with using aouvdopios grains, minims, ets is there is a gap in the numbers. Grains can be 60. 62 or 65 mg. Miniims can be 15 or 16 drops. The you have those silly oz, scruples, etc. With the funny emblems; i wish they would just fly away never to be seen.

Thanks! I am gonna need all of the help that I can get.

Specializes in Practical nursing.