Why is saline so acidic (and does it really matter?)

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2013

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Reddi, B.

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International Journal of Medical Sciences, 2013; 10(6):747-750

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Benjamin AJ Reddi

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Commercial 0.9% saline solution for infusion has a pH around 5.5. There are many reasons for this acidity, some of them still obscure. It is also true that infusion of normal saline can lead to met-abolic acidaemia, yet the link between the acidity of saline solution and the acidaemia it can en-gender is not straightforward. This commentary draws together the known and putative sources of acidity in saline solutions: it turns out that the acidity of saline solution is essentially unrelated to the acidaemia complicating saline infusion.

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© Ivyspring International Publisher. This is an open-access article distributed under the terms of the Creative Commons License (http://creativecommons.org/ licenses/by-nc-nd/3.0/). Reproduction is permitted for personal, noncommercial use, provided that the article is in whole, unmodified, and properly cited.

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