Another Drug Dosage Question

kgh31386, BSN, MSN, RN · Aug 18, 2009

Before I work these, are you 100% positive that's the correct problem and what it's asking for? Some threads have info missing or a typo that throws it off...double check real quick

nkara, CNA · Aug 18, 2009

God I'm taking this class in September and I hope it makes sense to me... right now this all sounds like gibberish! lol

cingram03 · Aug 18, 2009

Yes! I doubled checked myself...3 times. I just know that the first problem is missing vital information, LIKE THE LABEL. I just wanted to make sure. Driving me nuts!

Daytonite, BSN, RN · Aug 18, 2009

problem #1: shawn is to receive 350 ml d5 1/4 ns with 2 meq khpo4/100ml of fluid over a 24 hour period. the fluid is available only in 250 ml bags. how much khpo4 will you add to each bag?

your answer you were given must be wrong. i keep getting an answer of 1.4. this is a ratio. set up the equation:

2 meq in 350 ml = x meq in 250 ml and solve for x

.

the answer is

1.4 meq

.

problem #2: joe is receiving 2800 ml d5 1/2 ns with 20 meq kcl/l/day. the fluid is available only in 500 ml bags. the kcl is labeled 30 meq/10ml. how much kcl will you add to each bag?

500 ml d5 1/2 ns (fluid on hand)/1 x 20 meq/1 l (dose desired) x 10 ml/30 meq (dose on hand) x 1 l/1000 ml (conversion factor) =

3.3 ml

(amount of kcl to add to each 500 ml bag)

kgh31386, BSN, MSN, RN · Aug 18, 2009

problem #1: shawn is to receive 350 ml d5 1/4 ns with 2 meq khpo4/100ml of fluid over a 24 hour period. the fluid is available only in 250 ml bags. how much khpo4 will you add to each bag?
your answer you were given must be wrong. i keep getting an answer of 1.4. this is a ratio. set up the equation:
2 meq in 350 ml = x meq in 250 ml and solve for x
.
the answer is
1.4 meq
.
problem #2: joe is receiving 2800 ml d5 1/2 ns with 20 meq kcl/l/day. the fluid is available only in 500 ml bags. the kcl is labeled 30 meq/10ml. how much kcl will you add to each bag?
500 ml d5 1/2 ns (fluid on hand)/1 x 20 meq/1 l (dose desired) x 10 ml/30 meq (dose on hand) x 1 l/1000 ml (conversion factor) =
3.3 ml
(amount of kcl to add to each 500 ml bag)

that's why i was asking about number 1 having any missing info...i kept getting 1.4meq and the op said the answer was 1.7 ml...

but daytonite, i was wondering if we may have missed something. because if there are 2meq per 100ml...then there would have to be 7 meq per 350ml. and no less than 5 meq per bag. but they said the answer was in ml, not meq...

cingram03 · Aug 18, 2009

but they said the answer was in ml, not meq...

my point exactly. i think this problem is missing the label information: xmeq / xml

thanks guys. after my post, i figured out the second one. really easy. just must have been fried and break was exactly what i needed.

thank you so much for you help!

kgh31386, BSN, MSN, RN · Aug 18, 2009

Yeah the first question is missing something. I believe the original concentration of K phos is missing.

carolinapooh, BSN, RN · Aug 19, 2009

Here's my question for the first problem: WHICH BAG OF FLUID IS AVAILABLE IN ONLY 250 mL? The 350 D5 1/4NS (which I've never heard of - bet it's D5 1/2 NS, but that's irrelevant, it could be chicken broth for all I care), or the 100 mL w/ the K-Phos (whose formula, just to be pedantic and because I took 2 years of chemistry w/a year of organic, is actually K3PO4, and the other is actually potassium hydrogen phosphate, a buffer for specific chemical reactions that's measured in millimoles, not mEqs)?

You can't solve it without that being answered, and I think THAT'S the missing piece of information.

My point in my post is there's a lot of screwy information there already, so it's not too much of a stretch to imagine there's more missing information...

kgh31386, BSN, MSN, RN · Aug 19, 2009

Missing info....yep there is. And D5 1/4 NS is actually possible. It's a hypertonic solution, but still irrelevant because something is missing.