Table 3.

An example of Stewart formulae (Eqns 18–21) in practice

Parameter	Control	Case 1	Case 2
BE (mEq/l)	0	-10	-10
AG (mEq/l)	14.8	14.8	14.8
β	5.7	5.7	2.2
BEcorrected	0	-10.6	-10.2
[SID+]e (mEq/l)	39	29	20.7
[SID+]a (mEq/l)	39	29	29
SIG (mEq/l)	0	0	8.3

AF, anion gap; β, buffer value; BE, base excess; SID⁺, strong ion difference; SIG, strong ion gap.