Poor Left Ventricular Ejection Fraction and Augmented Left Ventricular Enddiastolic Volume Index Are Predicting Outcome of Coronary Artery Bypass Grafting

Results: Exercise tolerance rised from a preoperatively mean of 70 Watt to 97 Watt postoperatively. Mean NYHA class was 2.7 pre- and 1.7 postoperatively. There were no significantly differences in the results of the three subgroups. Perioperativ mortality in group I was 6%. Actuarial 1 and 2 years survival in this group is at 81 and 70% respectively. These results differ signicantly from those of group II and III. Perioperativ mortality was 2% in group II and 1% in group III. Actuarial 1 and 2 years survival is at 93 and 84% in group II and at 95 and 83% in group III. There was no difference in postoperative outcome of pts with LVEDP > 12 mmHg in comparison with pts with LVEDP 12 mmHg. Pts with LVEDVI > 100ml/m2 had a significant higher peri- and postoperativ mortality than pts with LVEDVI 100ml/m2. Mean LVEDVI of those pts, whose LVEF increased postoperatively, was 84 ml/m2. Pts with no change in LVEF had a mean LVEDVI of 122 ml/m2. Conclusions: CABG in pts with reduced LVEF improves exercise tolerance and quality of life. Poor LVEF (30%) and augmented LVEDVI are predicting higher peri- and postoperativ mortality. Postoperative increase of LVEF is unlikely in pts with enlarged left ventricels.