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09-11-2004, 09:21 PM

The message
from (Neil) contains these words:

Fluid balance is an art form as well as a science. A typical adult in
the UK needs about 90 millimole of sodium per day and about 80 of
potassium and enough water to replace what goes out as urine plus
sweat losses (anything from 500mL to 5000 mL perday depending on the
situation).

The problem is solutions that are not "normal" ie same osmotic
strength as cells tend to cause blood problems. ( You can show this to
children using raw potato cut into chips all the same length put one
into pure water and one into a strong salt solution and the water one
swells and lenghtens the one in saline shrinks and becomes floppy. At
0,9% no change).

In the chemical sense, a normal solution is one of one gramme-equivalent
of dissolved substance to a litre of water.

--
Rusty
Open the creaking gate to make a horrid.squeak, then lower the foobar.
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