Help reconstitution problem

Published

We just started this I need help. Please explain so I can understand this.

Penicillin G 250,000 units, IM, is ordered. Available is Penicillin G vial containing 5,000,000 units in dry form. Reconstitute by adding 3.2 mL to yield 1,000,000 units/mL. How much would you administer per dose?

Up Vote Up Vote ×
Specializes in Critical Care, ED, Cath lab, CTPAC,Trauma.

Welcome to AN! The largest online nursing community!

We ask all students to show your work first then we can see what you are not understanding. What semester are you? This site is great! DosageHelp.com - Helping Nursing Students Learn Dosage Calculations

Up Vote Up Vote ×

This is my first semester 250,000 units I don't know what to divide 5,000,000 or 1,000,000. I'm lost.

Up Vote Up Vote ×
Specializes in OR, Nursing Professional Development.

Have you tried setting up the equation? What formula are you using?

Up Vote Up Vote ×

D/h*q

Up Vote Up Vote ×
Specializes in OR, Nursing Professional Development.

Okay, so what is your desired?

What do you have on hand, and what volume is it in?

Up Vote Up Vote ×
Specializes in Pedi.

You need to administer 250,000 units. In 1 mL, there are 1,000,000 units. That's all you need to know to figure out the answer.

Up Vote Up Vote ×
Specializes in Emergency.

Hi OP:

Lets dissect the question down, because as a first year student, this may pose potential problems:

Penicillin G 250,000 units, IM, is ordered. Available is Penicillin G vial containing 5,000,000 units in dry form. Reconstitute by adding 3.2 mL to yield 1,000,000 units/mL. How much would you administer per dose?

We know what the prescribed dose is, correct? It's the first number, which is 250,000 units. The second part is informing you what you will get in the event that you reconstitute with 3.2mL, which is a total of 1,000,000 units/mL. If you use the formula

Want

______ * Vehicle (or volume)

Have

You should find the answer. Remember, the question has stated that they've already added the diluent, which makes the second and third sentences distractors. You only need to look at the first sentence and the third sentence. The last sentence tells you what to answer it as.

Good luck. :D

Up Vote Up Vote ×

250,000/1,000,000*1ml=.25ml

Up Vote Up Vote ×

I have another question to ask I'm taking a test soon does anyone know where I can find review problems on finding a tablets per day with tid, bid, qid, q6h. I've been googling but nothing comes up. For example

1. The order is for aspirin 650 mg q 6 hours for pain. It comes as 325 mg tablets. How many tablets would be given per dose? How many tablets would be taken per day?

I know for this you'd do 650mg/325mg*1tab=2 per dose but how do you find per day?

these aren't hw problems I'm just reviewing for the test. I just need your feedback

Up Vote Up Vote ×
Specializes in Public Health, TB.

1 day equals 24 hours, right? So how many 6 hour intervals are in 1 day?

24hr/6hr=?

Up Vote Up Vote ×

4 so when I muliply 650*4=2600/325=8 per day?

Up Vote Up Vote ×
+ Join the Discussion