hypotonic and hypertonic fluids


Dec 5, '08I pretty much understand what hypotonic and hypertonic mean. I have got that from other threads but I am have a horrible time trying to remember all the types of solutions and what they are used for :(

Dec 6, '08lets start with isotonic solutions... you have:
 0.9 normal saline
 d5(5% dextrose) in water
 ringers solution
 lactated ringers as for the ringers just remember they contain a certain balance of a little bit of everything we need and its composition is similar to whats found in our plasma... making them isotonic forever and ever amen.
if 0.9% normal saline is isotonic and half of 0.9= 0.45% that would make this solution more dilute (more water...) therefore anything less than 0.9 is hypotonic
example: 0.45% saline
if the number is greater than 0.9% like say 3% ; 5%
or
has 2 solute percentages together like 5% in 0.45% well...
this definitely contains more solutes (more particles) therefore anything greater than 0.9 or contains 2 solute percentages is considered hypertonic
example:
 3% saline
 5% dextrose in 0.225% saline,
 5% dextrose in 0.45% saline,
 5% dextrose in 0.9% saline
if you can grasp that concept then you should be fine. i hope this helps and i hope i didn't confuse you. 
Dec 6, '08Quote from thatindiangurlthat information is included on this chart. you can open this file up and print it out: table of commonly used iv solutions.doci am have a horrible time trying to remember all the types of solutions and what they are used for.
the link to it is also posted on this post in one of the sticky threads: http://allnurses.com/forums/1458776post6.html 
Dec 6, '08Quote from candygyrlso both ringers soln & lactated ringers will be isotonic forever and ever amen? sorry that's probably a stupid question but i wanted to ask to be sure!:dlets start with isotonic solutions... you have:
 0.9 normal saline
 d5(5% dextrose) in water
 ringers solution
 lactated ringers as for the ringers just remember they contain a certain balance of a little bit of everything we need and its composition is similar to whats found in our plasma... making them isotonic forever and ever amen.

Dec 6, '08Quote from shrimpchipsI can answer that for you. It is not a stupid question. Both Ringer's Solution and Lactated Ringer's will be isotonic forever and ever amen because they will always have the same recipe that makes them what they are.[/list]So both Ringers soln & Lactated Ringers will be isotonic forever and ever amen? Sorry that's probably a stupid question but I wanted to ask to be sure!
 Ringer's  has 147 mEq of sodium, 4 mEq of potassium, 4 mEq of calcium and 166 mEq of chloride. This results in an approximate pH of 5.8 and an osmolarilty of 310 making it isotonic.
 Lactated Ringers  has 130 mEq of sodium, 4 mEq of potassium, 3 mEq of calcium, 109 mEq of chloride and 28 (I think its grams) of lactate. This results in an approximate pH of 6.6 and an osmolarilty of 275 making it isotonic.

Dec 6, '08ShrimpChips,
It's cool.... Yes. Ringers, Lactated Ringers... Isotonic... forever and ever Amen.
Also there are other plenty of other IV solutions I just narrowed them down to a few to minimize confusion and to provide examples, but if you have a basic concept of the tonicity of solutions, then as they come at you even when they are not familiar (it's hard to remember them all) you can file them away much easier in your mental IV catalog. 

Dec 6, '08I got it forever and ever amen! Thank you so much for your replies :) I will never forget this stuff now ha ha ha


Dec 6, '08A million thank you's for this thread and the wonderful replies!!!!! We have F&E on our test on Thursday and this sums up the IV solutions so well!!! THANK YOU!!

Dec 7, '08So I'll be graduating in May, and this is the first time IV solutions have seemed easy! :bowingpur
