Table 2 Comparison of intraoperative characteristics of patients with and without surgical site infections
All (n = 188) | Surgical site infection | χ2 | P value | |||
|---|---|---|---|---|---|---|
No (n = 141) | Yes (n = 47) | |||||
Location of chest opening | CICU | 34 | 27 (79.4%) | 7 (20.6%) | 0.431 | 0.512 |
Operating room | 154 | 114 (74.0%) | 40 (26.0%) | |||
Foreign material placed | No | 131 | 124 (94.7%) | 7 (5.3%) | 89.036 | 0.000 |
Yes | 57 | 17 (29.8%) | 40 (70.2%) | |||
Duration of aortic cross-clamp | ≤45 min | 41 | 31 (75.6%) | 10 (24.4%) | 0.01 | 0.919 |
>45 min | 147 | 110 (74.8%) | 37 (25.2%) | |||
≤55 min | 132 | 121 (91.7%) | 11 (8.3%) | 65.651 | 0.000 | |
>55 min | 56 | 20 (35.7%) | 36 (64.3%) | |||
≤60 min | 154 | 138 (89.6%) | 16 (10.4%) | 96.944 | 0.000 | |
>60 min | 34 | 3 (8.8%) | 31 (91.2%) | |||