Table 3 Characteristics of spine surgery
| Operation | Unit |
Total population N=274 |
Control group N=252 |
SSI N=22 | p value |
|---|---|---|---|---|---|
| Localization | |||||
| Th | pts | 26 (9.49%) | 23 (9.13%) | 3 (13.64%) | |
| Th-L | pts | 2 (0.73%) | 2 (0.79%) | 0 (0.00%) | 0.808 |
| L | pts | 130 (47.45%) | 118 (46.83%) | 12 (54.55%) | |
| LS | pts | 116 (42.34%) | 109 (43.25%) | 7 (31.82%) | |
| Number of vertebrae | 2.30±0.90 | 2.36±1.10 | 0.786 | ||
| 0–2 | pts | 202 (73.72%) | 16 (66.67%) | 199 (71.07%) | |
| 3–4 | pts | 62 (22.63%) | 57 (22.62%) | 5 (22.73%) | 0.972 |
| 5 and more | pts | 10 (3.65%) | 9 (3.57%) | 1 (4.55%) | |
| ASA score | 2.14±0.68 | 2.18±0.71 | 0.752 | ||
| Reoperation | pts | 27 (9.85%) | 27 (10.71%) | 0 (0.00%) | 0.106 |
| Time of operation | minutes | 184.16±72.23 | 173.86±81.48 | 0.547 | |
| Operation access | |||||
| Anterior | pts | 7 (2.56%) | 1 (4.17%) | 7 (2.51%) | |
| Posterior | pts | 261 (95.60%) | 240 (87.91%) | 6 (3.395%) | 0.938 |
| Graft | pts | 5 (1.82%) | 5 (1.98%) | 0 (0.00%) | 0.505 |
| Implant | pts | 239 (87.23%) | 221 (87.70%) | 18 (81.82%) | 0.428 |
| Drainage | |||||
| Redon | pts | 258 (94.16%) | 238 (94.44%) | 20 (90.91%) | 0.498 |
| One drainage | pts | 61 (23.64%) | 57 (23.95%) | 4 (20.00%) | 0.690 |
| Two and more drainage | pts | 197 (76.36%) | 181 (76.05%) | 16 (80.00%) | |
| Transfusions | pts | 49 (17.88%) | 47 (18.65%) | 2 (9.09%) | 0.262 |
| Blood loss | ml | 1027.82±968.97 | 747.37±1234.82 | 0.106 | |
| Haemoglobin | 103.45±20.05 | 105.36±20.50 | 0.548 | ||
| Corticoids | pts | 26 (9.49%) | 25 (9.92%) | 1 (4.55%) | 0.409 |
| Methylprednisolone | pts | 5 (1.82%) | 5 (1.82%) | 0 (0.00%) | 0.505 |
| Hydrocortisone | pts | 18 (6.57%) | 17 (6.75%) | 1 (4.55%) | 0.689 |
| Postoperative NICU | |||||
| TISS on admission | 57.21±1.01 | 57.36±1.06 | 0.526 | ||
| TISS total | 11593.22±11693.03 | 38364.64±42240.21 | 0.383 | ||
| APACHE II | 9.62±3.29 | 9.14.±3.40 | 0.455 | ||
| CRP | 3.41±9.02 | 2.33±14.58 | 0.130 | ||
| CRP 1 day after OP | 35.66±19.97 | 38.89±24.24 | 0.541 | ||
| Airways | pts | 1 (0.36%) | 1 (0.40%) | 0 (0.00%) | 0.767 |
| Mechanical ventilation | pts | 1 (0.36%) | 1 (0.40%) | 0 (0.00%) | 0.767 |
| Artery catheters | pts | 32 (11.68%) | 29 (11.51%) | 3 (13.64%) | 0.766 |
| Central venous catheter | pts | 2 (0.73%) | 2 (0.73%) | 0 (0.00%) | 0.675 |
| Urine catheter | pts | 263 (95.99%) | 243 (96.43%) | 20 (90.91%) | 0.423 |
| Hospital wound complications | pts | 27 (9.85%) | 15 (5.95%) | 12 (54.55%) | <0.001 |