Tag Sodium
CCC Critical Care compendium 340

Sodium

Sodium is the major positively charged Cation in ECF. It determines ECF volume. Major intravascular ion to affect osmolality…..an acute increase or decrease in serum sodium will produce an increase or decrease in serum osmolality.

CCC Critical Care compendium 340

Hyponatraemia

Hyponatraemia: common problem in ICU (30% of patients have a Na < 134mmol/L). Independent predictor of mortality in ICU

CCC Critical Care compendium 340

Hypernatraemia

Hypernatraemia can be caused by a number of critical illnesses: water depletion (decreased intake, hypotonic fluid loss – renal/non-renal); solute excess (Na+ or other)