Table 2.
Surgical and laboratory characteristics according to LGI.
| Variable | Total (n=3813) |
LGI quartiles | P-value | |||
|---|---|---|---|---|---|---|
| Q1 (n=955) |
Q2 (n=954) |
Q3 (n=951) |
Q4 (n=953) |
|||
| CABG characteristics | ||||||
| Elective surgery, n (%) | 2444 (64.1) | 595 (62.3) | 631 (66.1) | 612 (64.3) | 606 (63.6) | 0.364 |
| Cardiopulmonary bypass, n (%) | 427 (11.2) | 118 (12.3) | 81 (8.5) | 83 (8.7) | 145 (15.2) | 0.001 |
| Number of bypasses, n (SD) | 3.1 (0.7) | 3.1 (0.7) | 3.2 (0.7) | 3.0 (0.7) | 3.1 (0.7) | 0.571 |
| Laboratory characteristics | ||||||
| Prior creatinine, mg/dl (SD) | 1.09 (0.32) | 1.11 (0.39) | 1.10 (0.45) | 1.09 (0.34) | 1.08 (0.31) | 0.615 |
| Prior hematocrit, % (SD) | 39.2 (4.1) | 38.6 (4.4) | 39.1 (4.6) | 39.4 (4.3) | 39.1 (5.0) | 0.487 |
| First-day postoperative blood glucose level, mg/dl (SD) | 165.4 (25) | 139.8 (27) | 157.7 (24) | 171.3 (29) | 193.8 (33) | < 0.001 |
| First-day postoperative white blood cells count, cell/mm3 (SD) | 12262 (2146) | 10240 (2486) | 11744 (2097) | 13810 (2483) | 15171 (5739) | < 0.001 |
| Postoperative lymphocyte/neutrophil ratio (SD) | 11.7 (1.8) | 5.4 (1.9) | 9.6 (1.7) | 13.8 (1.8) | 18.5 (2.4) | < 0.001 |
| Postoperative C-reactive protein, mg/L (SD) | 51.6 (4.7) | 31.1 (4.8) | 45.6 (4.6) | 57.2 (5.0) | 63.8 (7.1) | < 0.001 |
CABG=coronary artery bypass grafting; LGI=leuko-glycaemic index; Q=quartile; SD=standard deviation