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Equations

Scores

Sodium Deficit in Hyponatremia

  Units: US SI
Is patient female? Yes
Normal Pt Weight lbs
Serum Na mEq/L
Desired Na mEq/L
Sodium Deficit mEq

Sodium Deficit = Total Body Water * Normal Wt in kg * (Pt's Na - Desired Na) (TBW = 0.6 if male and 0.5 if female)

Remember not to correct too rapidly to avoid central pontine myelinolysis!