Table 3.
Differences in complications and destination between revision and primary surgery.
| Variables | Revision surgery N = 7889 | Primary surgery N = 31,843 | P value |
|---|---|---|---|
| Complications within 30 days of surgery | |||
| Deep vein thrombosis | 37 (0.48%) | 132 (0.42%) | .52 |
| Pulmonary embolism | 27 (0.35%) | 77 (0.25%) | .12 |
| Surgical site infection | 87 (1.13%) | 254 (0.82%) | .01 |
| New neurological disorder | 86 (1.20%) | 222 (0.72%) | <.01 |
| Urinary tract infection | 70 (0.90%) | 278 (0.89%) | .93 |
| Cerebral vascular accident | 11 (0.15%) | 27 (0.08%) | .11 |
| Myocardial infarction | 18 (0.23%) | 29 (0.09%) | <.01 |
| Incidental durotomy | 231 (3.40%) | 535 (1.75%) | <.01 |
| Hematoma | 40 (0.51%) | 151 (0.48%) | .73 |
| Pneumonia | 42 (0.62%) | 76 (0.24%) | <.01 |
| Destination | |||
| 30-day readmission to hospital | 510 (6.64%) | 1,672 (5.42%) | <.01 |
| 30-day return to OR | 235 (3.05%) | 704 (2.27%) | <.01 |
| Revision surgery within 3 mo | 168 (2.84%) | 463 (1.91%) | <.01 |
OR operating room.