Figure 2

Plasma bicarbonate concentration versus relative haemoglobin after acute haemodilution in different patient groups. Plasma bicarbonate (HCO₃^-) concentration (mmol/l) versus relative haemoglobin (Hb) (%) after acute normovolaemic haemodilution in different patient groups. Comparison is shown for predicted (open squares) and reported (filled circles) values [18] of the actual HCO₃^- concentration (top curve), composed of the calculated HCO₃^- values (filled triangles) from plasma dilution, plus the increments from the plasma proteins (Pr), the erythrocytes (E), and the interstitial fluid (ISF) with corresponding buffers. Adapted from Lang and Zander [12].