[obnursessco]

I work at a small rural hospital where we do mag very infrequently. I am wondering can you run mag and pit through the same IV? I seem to remember from when I worked at a large teaching hospital that we did that all the time. The mag would be piggybacked onto the mainline and the pit would be run directly in on the other y-site ext. I took care of a pt the other day who had 2 IV's in the same arm, one to run mag and the other pit, because the nurse who started her mag and induction insisted that mag and pit are not compatable. I could not find anywhere in a policy, drug book, or text book, where it said one way or the other. Let me know if anyone knows the answer. Thanks.

[methylene]

Micromedex says they're Y-site compatible, with syringe and admixture compatibility untested.

They cite the following reference:

Trissel LA, Leissing NC: Trissel's Tables of Physical Compatibility
Lake Forest, IL: MultiMatrix, Inc: 1996


Hope this helps.

[NurseCutie]

Also call your pharmacy when in doubt. I do it all the time!

[babyktchr]

I always remember if they occur naturally in the body, then they have to have the ablilty to live together in tubing. Never run Magnesium with CALCIUM (seen it happnen in an ICU on a post partum patient).

[rn/writer]

Originally Posted by babyktchr

I always remember if they occur naturally in the body, then they have to have the ablilty to live together in tubing. Never run Magnesium with CALCIUM (seen it happnen in an ICU on a post partum patient).

Magnesium and calcium both occur naturally in the body, so doesn't that contradict your first statement?

[methylene]

Originally Posted by rn/writer

Magnesium and calcium both occur naturally in the body, so doesn't that contradict your first statement?

Indeed. What babyktchr stated is essentially a logical fallacy known as "Appeal to Nature".

However, from basic chemistry we should know that different salts, when dissolved in the same solution together, can yield precipitates via double displacement reactions.

Lucky for us, we don't have to work out the equations to determine solubility on a daily basis d/t many wonderful reference utilities.

[rn/writer]

Originally Posted by methylene

Indeed. What babyktchr stated is essentially a logical fallacy known as "Appeal to Nature".

However, from basic chemistry we should know that different salts, when dissolved in the same solution together, can yield precipitates via double displacement reactions.

Lucky for us, we don't have to work out the equations to determine solubility on a daily basis d/t many wonderful reference utilities.

Thank goodness for pharmacy and all the others who work these equations out for us and provide all those essential references.

[Elvish]

Calcium gluconate is the antidote to mag toxicity, so why would you want to run them together in any other situation?

[methylene]

Originally Posted by Elvish

Calcium gluconate is the antidote to mag toxicity, so why would you want to run them together in any other situation?

I don't claim to be an expert, but I was under the impression that Calcium gluconate only serves to stabilize membrane potentials in nervous and muscle tissue; it doesn't provide any actual increased renal filtration of Mg. Same reason it's given for extreme hyperkalemia as well.

Therefore, I could see the concurrent use of Ca and Mg drips in someone who is significantly deficient in both despite normal albumin and fluid volume.

My three cents.

[Elvish]

Originally Posted by methylene

I don't claim to be an expert, but I was under the impression that Calcium gluconate only serves to stabilize membrane potentials in nervous and muscle tissue; it doesn't provide any actual increased renal filtration of Mg. Same reason it's given for extreme hyperkalemia as well.

Therefore, I could see the concurrent use of Ca and Mg drips in someone who is significantly deficient in both despite normal albumin and fluid volume.

Ok, I'm thinking in OB terms, not for the gen pop. I could see what you're saying there.