Published Mar 31, 2004
Okay, I am going to take a stab at this and see if I can be of any help. Did the question have any backround on the guy, as to what happened to him to cause this sodium level? Looking at my med-surg book, it does say a s/s of hyponatremia is dry mucous membranes.....has hypernatremia as intense thirst, dry swollen tongue. Maybe he is dehydrated therefore dry mucous membranes?? Not sure if I am making too much sense...LOL...
I always thought of sodium and water (volume) going together, but:
You can have hyponatremia in any one of three volume states:
hypervolemia: excess volume with "normal" sodium so its diluted (CHF, cirrhosis, renal failure)
hypovolemia (mucous membranes would be dry)--if sodium loss is in excess of volume loss (GI fluid loss, diuretic therapy, adrenal insufficiency, burns, hypotonic dehydration)
euvolemia: if loss of sodium, not volume (SIADH, medications, hypothyroidism)
Hope that helps!
canoehead, BSN, RN
If you vomit a lot you lose sodium and become dehydrated.
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