Fluid & Electrolyte

Sodium . Is the dominant cation in ECF. Sodium salts provide 90% of ECF osmotic concentration. Sodium chloride (NaCl) Sodium bicarbonate . Normal Sodium Concentrations . In ECF. About 140 mEq/L . In ICF. Is 10 mEq/L or less . Potassium . Is the dominant cation in ICF. Normal potassium concentrations. In ICF: about 160 mEq/L. In ECF: is 3.5–5 ... ................
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