Dosage Calculations

[chandrapn2011]

I am really trying to understand this. I was in class last night, and i understand the method but it is confusing when you have a problem like 1gr/5ml and the physician has orders 500mg??...some please help me...please

[Shannoncobb1]

you take the Dr's order of 500mg & divide that into what you have on hand in this case 1g = 1000mg then multiply by 5ml...you would give 2.5mls

The formula I know is D (doctors order) over H (what you have) x ml

Hope this helps

[chandrapn2011]

THANKS, Do you use this method on all your calculations?

[garnetgirl29, BSN, RN]

That's the method I use for my calculations as well.

[Esme12, ASN, BSN, RN]

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[td=align: right]http://www.davesems.com/files/drug_dose_calculations.pdf

dosagehelp.com - helping nursing students learn dosage calculations

http://www.simetric.co.uk/si_medical.htm\

1 pound (avoirdupois

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[td=width: 159]dimensional analysis

great site

conversions toapothacary

= 453.592 g

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1/2 grain

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= 30 mg

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[td=width: 136, align: right]1 pound (apothecary)

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[td=width: 159]= 373.242 g

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[td=width: 81, align: right]1/4 grain

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[td=width: 100]= 15 mg

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[td=width: 136, align: right]1 ounce (avoirdupois)

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[td=width: 159]= 28.35 g

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[td=width: 81, align: right]1/8 grain

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[td=width: 100]= 8 mg

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[td=width: 136, align: right]1 ounce (apothecary)

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[td=width: 159]= 31.10 g

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[td=width: 81, align: right]1/12 grain

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[td=width: 100]= 5 mg

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[td=width: 136, align: right]15 grains

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[td=width: 159]= 1 g

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[td=width: 81, align: right]1/100 grain

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[td=width: 100]= 600 mcg

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[td=width: 136, align: right]10 grains

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[td=width: 159]= 600 mg

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[td=width: 81, align: right]1/150 grain

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[td=width: 100]= 400 mcg

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[td=width: 136, align: right]7 1/2 grains

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[td=width: 159]= 500 mg

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[td=width: 81, align: right]1/200 grain

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[td=width: 100]= 300 mcg

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[td=width: 136, align: right]5 grains

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[td=width: 159]= 300 mg

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[td=width: 81, align: right]1/250 grain

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[td=width: 100]= 250 mcg

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[td=width: 136, align: right]1 1/2 grains

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[td=width: 159]= 100 mg

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[td=width: 81, align: right]1/300 grain

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[td=width: 100]= 200 mcg

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[td=width: 136, align: right]1 grain

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[td=width: 159]= 64.79891 mg

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[td=width: 81, align: right]1 kilogram

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[td=width: 100]= 2.2 pounds

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[td=width: 136, align: right]1 pound

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[td=width: 159]= 0.45 kilograms (kg)

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[td=width: 81, align: right]1 stone

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[td=width: 100]= 6.35 kg

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[td=width: 136, align: right]1000 mcg

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[td=width: 159]= 300 to 7000 iu (below)

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[td=width: 81, align: right]1000 mcg

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[td=width: 100]= 1 mg

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[td=width: 136, align: right]1 scruple

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[td=width: 159]= 1.2 g

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[td=width: 81, align: right]1 drachm

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[td=width: 100]

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[Esme12, ASN, BSN, RN]

Grrrrrrrrr fromatting......click on the links you will find them helpful