Case records of total 66 cows with albomasal displacement and cecal dilatation and torsion were examined to determine whethar the preoperative heart rate, plasma base excess (BE) concentration, serum chloride (Cl^-) and Anion gap (AG) could be used as a prognostic index. Cows were divided into groups according to the following ranges; Heart rate ≥90; BE:>+7.5, <-5; Cl^-: ≤88; AG:>26. The higest dead rates were observed with 73.3 % and 52.63 % in AG and Cl^-, respectively (p < 0.05). It was found that preoperative calculation of AG could be reliably used and predict the outcome of abomasal displacement and cecal dilatation and torsion in dairy cattle. The AG was much more accurate index for predicting outcome than BE and heart rate. Cl^- concentration could be used as the second criterion.