Input:   Age Sex Factor Male < 65 years old (0.6) Male >= 65 years old (0.5) Female < 18 years old (0.6) Female 18-65 years old (0.5) Female >= 65 years old (0.45) Desired Na   mEq/L Normal Weight   gm kg lb mg Serum Na   mEq/L

Result:   WDef   L fL mL   Decimal Precision: 0 1 2 3

Notes

• The default unit of measure for weight is kilograms. Please verify that the correct unit of measure has been selected.
• The term Age Sex Factor * Normal Weight represents the normal total body water (TBW).
• Normal TBW is gender and age specific as seen in the 0.6, 0.5 and 0.45 factors above.

References

1. Adrogue HJ, Madias NE. Hypernatremia. N Engl J Med. 2000 May 18;342(20):1493-9.