Table 2.
Comparison of operative events between the durotomy and no durotomy groups
| Outcome | No durotomy (n=348) | Durotomy (n=41) | p-value |
|---|---|---|---|
| Specific Procedures† | 0.046 | ||
| Decompression Only | 18 (5%) | 6 (15%) | |
| Non instrumented Fusion | 74 (22%) | 7 (18%) | |
| Instrumented Fusion | 251 (73%) | 26 (67%) | |
| Multi-level Fusion | 78 (22%) | 13 (32%) | 0.26 |
| Levels Decompressed | 0.055 | ||
| None | 4 (1%) | 0 (0%) | |
| 1 | 147 (42%) | 12 (29%) | |
| 2 | 125 (36%) | 13 (32%) | |
| 3+ | 72 (21%) | 16 (39%) | |
| Operation time (min) | 205.9 (84) | 211.2 (80.7) | 0.70 |
| Blood loss (ml) | 571.9 (464.4) | 668.2 (505.6) | 0.22 |
| Blood Replacement | |||
| Intraoperative replacement | 117 (34%) | 15 (37%) | 0.87 |
| Post-operative transfusion | 70 (20%) | 11 (28%) | 0.40 |
| Length of stay (days) | 5.7 (20) | 5.6 (4.4) | 0.98 |
| Intraoperative complications§ | |||
| Vascular injury | 1 (0%) | 0 (0%) | 0.20 |
| Other | 8 (2%) | 1 (2%) | 0.62 |
| None | 340 (98%) | 0 (0%) | < 0.001 |
*
Surgical information was available for 371 non-durotomy and 38 durotomy patients.
†
Specific procedure data was available for 363 non-durotomy and 37 durotomy patients.
§
No cases were reported of aspiration into the respiratory tract or operation at wrong level.