SAS
The SAS score of each patient was calculated from the recorded
anaesthesia chart as described previously by Gawande et
al30. The SAS score is
the sum of the points from each category using the above three variables
ranges from 0 to 10 points, and the determination of the intraoperative
blood loss is based on both the weight of gauze used and the suction
used. For patients underwent OPCABG, blood pressure and heart rate were
measured invasively and monitored continuously throughout the surgical
procedure.