Total Body Water ( TBW ) Formula - Respiratory Calculators

Formula:


Desired total Body Water (TBW) in L= (Measured serum Na x 0.6 x weight) / Normal serum Na
where,
Measured serum Na = Measured amount of sodium in mEq/L or mmol/L.
Normal serum na = Normal amount of sodium in mEq/L or mmol/L.

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