Fig. 3. Glucose concentration in ( A ) healthy colon tissue and ( B perianastomotic tissue measured by microdialysis (mmol/l; bar = mean; whisker = SD). Lactate/Pyruvate-ratio (L/P-ratio) concentration in ( C ) healthy colon tissue and ( D ) perianastomotic colon tissue measured by microdialysis (no unit; bar = mean; whisker = SD). Group R-RL (restricted Ringer lactate) received 3 ml · kg−1· h−1Ringer lactate (RL); Group GD-RL (goal-directed RL) received 3 ml · kg−1· h−1RL + 250 ml of RL if Svo2was less than 60%; Group GD-C (goal-directed colloid) received 3 ml · kg−1· h−1RL + 250 ml of hydroxyethyl starch (HES; 130/0.4) if Svo2was < 60%. No statistically significant differences among the groups were detected.