help with pharm question please/thank you

chare · Oct 22, 2017

As with your other post, why don't you show us what you have done so far?

btf4 · Oct 23, 2017

(first) "X"ml=200mg * 2.3ml/500mg= 0.92 ml

(second) i crossed multiplied because i am not sure how to find "x" if there is already a number there, so i did. 500mg/6ml * 5.8ml/500mg= 2900/3000= 0.97ml

(third) 500mg/9.8ml * 4ml/200mg= 2000/1960= 1.0ml

chare · Oct 23, 2017

(first) "X"ml=200mg * 2.3ml/500mg= 0.92 ml
(second) i crossed multiplied because i am not sure how to find "x" if there is already a number there, so i did. 500mg/6ml * 5.8ml/500mg= 2900/3000= 0.97ml
(third) 500mg/9.8ml * 4ml/200mg= 2000/1960= 1.0ml

As with your other problem, you are trying to use all of the data provided, and that is not necessary.

Referring to the original problem, what exactly are you being asked to determine?

The order is for 0.1 g subcutaneous. The label says that the vial contains 500mg of dry powder. Which dilution is most appropriate?
Dilute with 2.3 ml for a concentration of 200 mg/ml
Dilute with 5.8 ml for a concentration of 500 mg / 6ml
Dilute with 9.8 ml for a concentration of 200 mg/ 4ml
a. The nurse should dilute with _____________________ ml.
b. How many ml will the nurse give the patient_________________ml

btf4 · Oct 23, 2017

which dilution is most appropriate and how much ml should i administer for the corresponding ml

chare · Oct 23, 2017

which dilution is most appropriate and how much ml should i administer for the corresponding ml

Exactly. so what do you think you should do first to solve this?

btf4 · Oct 23, 2017

I'm not completely sure with this one, i tried doing this.

(first) 500mg * ml/200mg= 2.5 ml

(second) 500mg * 6ml/500mg= 6ml

(third) 500mg * 4ml/200mg= 10ml

chare · Oct 23, 2017

Forget borh the total dose in the vial (500 mg) as well as the diluent volumes provided (2.3 mL, 5.8 mL, and 9.8 mL). As with your other post, medicationsnthatnare reconstituted willnprivide you a diluent volume, and the final concentration that this results in. Sometimes this will be provided as x mg per 1 mL. Other times, they will provide the concentrion as x mg in y mL; this is what you have in your problem. For example, if you reconstitute the vial with 9.8 mL of sterile H2O, this results in a final concentration of 200 mg/4 mL.

What do you think you should do now? You van wirk this the in the same manner you did inbyour other post.

ETA: Pardon the delay, and please forgive any typos as I'm posting on my phone.

btf4 · Oct 23, 2017

like this? "X"ml= 0.1G * 1000mg/1g * 1ml/200mg= 0.5 ml?

chare · Oct 23, 2017

like this? "X"ml= 0.1G * 1000mg/1g * 1ml/200mg= 0.5 ml?

Yes, and again, good job. Not exactly how I would have worked it, but this method works for you.

A skill that you need to develop is being able to read the problem, and determine what you need. Sometimes it will be fairly straight forward, and other times it will be somewhat mors comploxated as there mighr be a considerable amount of distracting information. Regardless of how much onformation providsd, the first step should always be to determine exactly what you are solving, and then determine what information that you need.

btf4 · Oct 23, 2017

and for the second part it would be like this? because "X" has a number which is 6 so..

"X"ml= 0.1g * 1000mg/1g * 6ml/500mg = 1.2ml?

chare · Oct 23, 2017

and for the second part it would be like this? because "X" has a number which is 6 so..
"X"ml= 0.1g * 1000mg/1g * 6ml/500mg = 1.2ml?

I might have not been following as closely as I could have.

You have an order to deliver a 0.1 g dose of medication via subcutaneous injection. The medication in question can be reconstituted to one of three final concentrations: 200 mg/mL, 500 mg/6mL, and 200 mg/4 mL. Which concentration do you think is most appropriate?