Table 1

 Characteristics of the study sample

VariableNo. of samplesMedianRange
pH (arterial)1687.37 pH units7.12–7.50
Bicarbonate (arterial)16825.0 mmol/l14.6–42.2
Lactate (venous)1671.13 mmol/l0.38–6.51
Base excess (arterial)165−0.1 mmol/l−12.1–16