Are IV fluids hypertonic, hypotonic, isotonic?
The tonicity depends on what fluids are being used in the IV. Since this is not my area of expertise, I searched Google under the key words "IV fluids hypertonic hypotonic isotonic" to get these possible sources:
http://www.efn.org/~nurses/IVF.html
http://ajpregu.physiology.org/cgi/content/abstract/245/6/R785
http://72.14.253.104/search?q=cache:Ds_fc1zcN1oJ:www.cochrane.org/evidenceaid/injuriesandwounds/transfusion/summary_iv_fluids.doc+IV+fluids+hypertonic+hypotonic+isotonic&hl=en&ct=clnk&cd=5&gl=us&client=safari
http://www-isu.indstate.edu/mary/fldnote.htm
http://72.14.253.104/search?q=cache:znvypmZYOV0J:www.touchbriefings.com/pdf/14/ACF7977.PDF+IV+fluids+hypertonic+hypotonic+isotonic&hl=en&ct=clnk&cd=9&gl=us&client=safari
I hope this helps. Thanks for asking.