From: European Multicenter Study on Coronary Artery Bypass Grafting (E-CABG registry): Study Protocol for a Prospective Clinical Registry and Proposal of Classification of Postoperative Complications
Stages
eGFR level (mL/min/1.73Â m 2 )
1
90 or above
2
89 to 60
3a
59 to 45
3b
44 to 30
4
29 to 15
5
Less than 15 or on dialysis