daedalus
Forum Deputy Chief
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Saline or sterile water?
Im having a hard time with this.
Im having a hard time with this.
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all the books here still state water for 10 min. Chemical gets 20+, who ever writes our protocalls did't think of chemical identification lol
can i ask what we are regarding a severe burn as. Alot of the burn units here dislike the application of gel to large surface areas prefering irrigation. There is now a trend here to water, apply cling film over the burn and then the water jel dressings.
I'd be interested to hear what ye do and the reasoning behind the differend methods.
I am still trying to find a good use for sterile water (not saline) as an irrigant. Tastes good. (Yes, seriously).
Another Forum said:Speaking from a chemistry point of view (I know nothing of the specific make up of waterjel, but a fair amount about thermodynamics), it will make little difference. I know nothing of your understanding of chemistry, so forgive me if this is a little simplisitic.
Everything wants to have the same temperature. If something feels hot, what you are actually feeling is the transfer of heat from the hot plate to you. This is hotter than you, so the heat transfers to you. Obviously something that is colder than you will take heat away from you, and therefore feel cold.
Now, imagine you have 4 identical objects. two are at 100C, one at 50, and the other at 0. If we connect one of the hundreds with the 50 (assuming no other factors), the two will even out to a uniform 75C. If we connect the other 100C with the remaining 0C, they will even out ot 50C. Here, we have demonstrated that the colder the item, the more it can cool an object.
Heat is technically a form of energy. The hotter someting is, the more energy it has. The transfer of heat is transfer of energy. Different materials have different Specific Heat Capacities. This is a measure of the amount of energy (measured in Joules) required to heat 1g of water by 1 degree C (NB, degree C and Kelvin, K, are units with identical intervals). The higher the SHC, the greater the cooling capacity.
Basically, if it takes more energy to heat a substance the same amount, that substance will transfer more heat away from a hot object, as a lot of temperature reduction in the hot body actually causes little increase in the temperature.
Water has an SHC of 4.2 J/g/K.
What makes burns gel so good at heat dispersal will be that it has a high SHC, even higher than that of water. It is "the chemicals", but its not a reaction on the skin, so there is no need in terms of temperature reduction for the burns gel to be in contact with the skin, as long as the layer of clingfilm is thin enough for heat from the burn to permeate to the gel
I do think, however, that there are probably chemicals in the gel which help with the healing process. If there are, the gel would then need to come into contact with the burn.
Sorry if the chemistry lesson wasn't interesting, but I thought it might potentially be useful to the OP's friend