Table 3. Complications by Preoperative Hemobglobin A1c.
| No. (%) | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Preoperative HbA1c, % | Peak 48-h Postoperative Glucose Level, mg/dL | ||||||||
| Normal (<5.7) |
Prediabetic (5.7-6.4) |
Diabetic (≥6.5) |
P Value | <120 | 120-180 | 180-250 | >250 | P Value | |
| Any postoperative complication | 1346 (27.3) | 2248 (26.1) | 2683 (28.1) | .01 | 2084 (26.5) | 1614 (28.1) | 571 (22.2) | 1094 (30.2) | <.001 |
| Infectious complications | |||||||||
| Wound infection | 270 (5.5) | 445 (5.2) | 594 (6.2) | .01 | 452 (5.7) | 381 (6.6) | 114 (4.4) | 232 (6.4) | <.001 |
| Pneumonia | 76 (1.5) | 125 (1.5) | 104 (1.1) | .03 | 114 (1.5) | 76 (1.3) | 24 (0.9) | 49 (1.4) | .26 |
| UTI | 89 (1.8) | 173 (2.0) | 220 (2.3) | .11 | 159 (2.0) | 145 (2.5) | 34 (1.3) | 87 (2.4) | .003 |
| Sepsis | 95 (1.9) | 171 (2.0) | 199 (2.1) | .80 | 157 (2.0) | 121 (2.1) | 29 (1.1) | 89 (2.5) | .003 |
| Postdischarge outcomes | |||||||||
| Readmission within 14 d | 494 (10.0) | 867 (10.1) | 1038 (10.9) | .13 | 756 (9.6) | 617 (10.7) | 227 (8.8) | 447 (12.3) | <.001 |
| Readmission within 30 d | 716 (14.5) | 1222 (14.2) | 1453 (15.2) | .13 | 1083 (13.8) | 842 (14.6) | 316 (12.3) | 633 (17.5) | <.001 |
Abbreviations: HbA1c, hemoglobin A1c; UTI, urinary tract infection.