*For AKI: P<0.001 at all time-points. *For mortality: P=0.02 on first post-operative day, P=0.001 on pre-operative time-point, and P<0.001 at all other time-points.
Each bar represents interquartile range and horizontal line represents median. Day 1 refers to postoperative time 0–6 hours after surgery, day 2 corresponds to 48 hours after surgery, and day 3 corresponds to 72 hours after surgery.