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Old 04-13-2011
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Question Why use Ringer's lactate?

I can't seem to get this nailed down. Why do we use RL in settings where we actually need glucose instead of lactic acid? (eg: trauma, ischemic stroke).


PS. If this question has been posted before, or if I'm in the wrong forum, kindly direct me to the right spot.
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Old 04-13-2011
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Ringers Lactate isn't lactic acid, its just Normal Saline or 0.9% Saline.

Normal saline is isotonic, so it can be used in various settings for Fluid Replacement. This fluid replacement goes directly into the ECF, in the vascular compartment.

For Example, you have a patient of trauma (hemorrhage) who needs Volume Replacement.

Hope that helps!
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Old 04-13-2011
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Quote:
Originally Posted by patelMD View Post
Ringers Lactate isn't lactic acid, its just Normal Saline or 0.9% Saline.!
Ringer's Lactate Solution DOES CONTAIN lactic acid, exactly @ 28 mmol/L

So the question still unanswered
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Old 04-13-2011
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Quote:
Originally Posted by laithbv View Post
Ringer's Lactate Solution DOES CONTAIN lactic acid, exactly @ 28 mmol/L

So the question still unanswered
I beg to differ, his/her question stated ''Why do we use RL in settings where we actually need glucose instead of lactic acid? (eg: trauma, ischemic stroke).''

In the stated conditions, it serves as fluid Replacement or to increase venous return.

What's the point of giving glucose / "lactic" solution when the guy is going into hypovolemic shock?
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Old 04-13-2011
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Lactate serves as buffer for PH.
Lactate is the complementary base for lactic acid.
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Old 04-15-2011
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Hey thanks everyone, for the replies! Thanks to usluipek, I think the problem comes from my confusing between "lactic acid" (acid) and "lactate" (base). I did read somewhere that one of RL's functions is to buffer pH, so with the understanding that lactic acid =/= lactate, now it all makes sense.

And patelMD, yes I do agree about using RL as fluid replacement
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