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Posted
by RN_TOBE RN_TOBE Member

A oral solution has a strength of 500 mg in 5 mL. prepare a 0.6g dosage.?

I don't know how to set this math problem up....helppppppp..:banghead:

Been there,done that, ASN, RN

Has 33 years experience. 6,824 Posts

Hate to tell ya this doll, but that's a pretty basic question.

Please get some tutoring for ratio and proportion calculations.

I was good in math and I needed some extra help. The college tutor was free and after one session , It came to me.

Good luck!

ChipNurse

ChipNurse

180 Posts

You need to altleast attempt to set it up and show us where your line of thinking is and THEN we can help you out. :)

KelRN215, BSN, RN

Specializes in Pedi. Has 15 years experience. 1 Article; 7,349 Posts

This is a pretty easy question... like you should probably be able to do it in your head.

You have 500 mg in 5 mL. What does that mean? What does a dose of 0.6 g mean?

NOADLS

NOADLS

832 Posts

Convert 0.6g to mg (600mg) and from there, just ask any 12 year old for the answer.

PnutButterJelly

PnutButterJelly

46 Posts

I assume you are still in school? If your nursing program offers remedial math take it! I never needed it and everyone thought I was crazy for going to a class I didn't need at 7 am. But dimensional analysis was something I didn't really understand. I was doing math in my head and it worked, but dimensional analysis made life sooo much easier! If they don't offer this, see if you can find online tutorials.

Meriwhen, ASN, BSN, MSN, RN

Specializes in Psych ICU, addictions. 4 Articles; 7,907 Posts

Convert the doses to the same unit: either work in grams (g) or milligrams (mg). You can't work in both.

500mg/5mL = 600mg/XmL

(5 * 600)/500 = X

3000/500 = X

6 = X

It's 6 mL.

Seriously, I second everyone who has told you to take a remedial math class. You may think that you won't need to do dosage calculations when you're actually working as a nurse, that your pharmacy will have everything all figured out for you that all you have to do is give the medication.

The reality is that a. you're not always going to have a pharmacy on hand to make up dosages for you, and b. pharmacies DO make mistakes. You need to know how to figure out dosages.

Esme12, ASN, BSN, RN

Specializes in Critical Care, ED, Cath lab, CTPAC,Trauma. Has 42 years experience. 4 Articles; 20,908 Posts

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tbjockny

tbjockny

46 Posts

ordered: 0.6g

have: 500mg/5mL

(1)convert g to mg

600g x 1000mg/1g= 600mg

(2) (required dose x stock volume)/stock dose x stock volume, so:

(600mgx 5mL)/500mg = 6mL