Table 2.
Summary of perioperative factors and clinical results.
| Characteristic | Group A (n=34) |
Group B (n=22) |
P value | |
|---|---|---|---|---|
| Operative time, mean (SD), minutes | 188.1 (74.7) | 210.0 (57.4) | 0.24 | |
|
| ||||
| Blood loss, mean (SD), mL | 269.8 (421.1) | 436.7 (514.4) | 0.19 | |
|
| ||||
| Transfusion, yes, n (%) | 6 (17.6) | 6 (27.3) | 0.29 | |
|
| ||||
| No. of levels fused, mean (SD) | 5.4 (1.9) | 5.7 (1.8) | 0.53 | |
|
| ||||
| Posterior decompression, yes, n (%) | 12 (35.3) | 16 (72.7) | 0.006 | |
|
| ||||
| Perioperative complications, yes, n (%) | 4 (11.8) | 5 (22.7) | 0.23 | |
| Epidural hemorrhage | 1 | 2 | ||
| Massive bleeding (>1500 ml) | 0 | 1 | ||
| peritonitis | 0 | 1 | ||
| Surgical site infection | 0 | 1 | ||
| Instrumentation failure | 1 | 0 | ||
| Deep vein thrombosis | 1 | 0 | ||
| Dural tear | 1 | 0 | ||
|
| ||||
| Additional adjuvant therapy, yes, n (%) | Chemotherapy | 27 (79.4) | 10 (45.5) | 0.009 |
| Radiotherapy | 19 (55.9) | 14 (63.6) | 0.56 | |
| Bone modifying agent | 26 (76.5) | 19 (86.4) | 0.36 | |
|
| ||||
| Postoperative ASIA classification, n (%) | A | 1 (2.9) | 1 (4.5) | 0.15 |
| B | 0 | 1 (4.5) | ||
| C | 3 (8.8) | 4 (18.2) | ||
| D | 8 (23.5) | 9 (40.9) | ||
| E | 22 (64.7) | 7 (31.8) | ||
|
| ||||
| Neurological improvement by at least 1 grade or maintenance of grade E, n (%) | 23 (67.6) | 9 (40.9) | 0.048 | |
|
| ||||
| Postoperative Barthel index, mean (SD) | 87.9 (24.6) | 68.8 (38.1) | 0.04 | |
|
| ||||
| Postoperative VAS, mean (SD) | 1.6 (1.9) | 2.3 (2.0) | 0.21 | |
|
| ||||
| Postoperative course, n (%) | Discharge to home | 29 (85.3) | 12 (54.5) | 0.01 |
| Transfer to hospice | 5 (14.7) | 5 (22.7) | 0.44 | |
| In-hospital death | 0 | 5 (22.7) | 0.004 | |
|
| ||||
| Revision surgery at local recurrence level, n (%) | 1 (2.9) | 0 | 0.60 | |
ASIA, American Spinal Injury Association; VAS, visual analogue scale.