Table 2.
Intraoperative and postoperative clinical and radiographic data
| Variable | Healthy-weight patients (BMI% < 85) (n = 181) | Obese patients (BMI% ≥ 85) (n = 55) | p value |
|---|---|---|---|
| Hybrid (number of patients) | 158 | 45 | |
| Screws (number of patients) | 22 | 11 | |
| Operative time (minutes)* | 293 ± 55 (180–495) | 324 ± 78 (210–600) | 0.001 |
| Fluids given (mL)* | 2757.5 ± 891.9 (750–5500) | 3077.2 ± 1092.3 (1400–6200) | 0.03 |
| Intraoperative blood loss (mL)* | 763.7 ± 368.2 (150–2000) | 910.1 ± 410.1 (350–1700) | 0.01 |
| Drain output (mL)* | 543.5 ± 268.2 (64–1483) | 472.0 ± 281.0 (21–1218) | 0.09 |
| Length of stay (days)* | 4.6 ± 0.7 (3–8) | 4.7 ± 0.7 (4–7) | 0.35 |
| Cell saver (mL)* | 186.4 ± 140.0 (23–800) | 208.2 ± 146.2 (35–542) | 0.32 |
| Total transfused (mL)* | 382.8 ± 288.0 (25–1775) | 378.9 ± 281.1 (35–948) | 0.93 |
| No intrathecal morphine (number of patients) | 3 (0.16%) | 5 (10%) | 0.02 |
| Number of complications | 28 (15%) | 8 (14%) | 0.95 |
| Postoperative major curve (°)*,† | 20 ± 5.7 (8–36) | 23.2 ± 9.4 (12–56) | 0.004 |
| Postoperative kyphosis (°)*,† | 31.1 ± 9.5 (10–56) | 36 ± 9.9 (15–53) | 0.019 |
| Postoperative lordosis (°)*,† | 40.6 ± 10.1 (20–68) | 42 ± 12.5 (10–70) | 0.513 |
* Values are expressed as mean ± SD, with range in parentheses; †at latest followup; BMI% = BMI percentile.