Table 1 The patient demographic characteristics and perioperative data
Characteristic (N = 49) | Descriptive statistics | Range |
|---|---|---|
Age (years) | 65.53 ± 11.87 | 21–85 |
Height (cm) | 156.12 ± 9.23 | 139–177 |
Weight (kg) | 64.64 ± 11.87 | 45–104 |
BMI (kg/m2) | 26.51 ± 3.99 | 23.29–33.20 |
Preoperative baseline Hb (g/dL) | 12.89 ± 1.58 | 8.6–16.6 |
IV crystalloid (mL) | 1474.49 ± 510.63 | 450–3650 |
Blood loss (mL) | 766.33 ± 564.71 | 100–2600 |
pRBC (units) | 2.94 ± 2.35 | 0–8 |
FFP (units) | 2.33 ± 2.29 | 0–8 |
Anesthesia time (minutes) | 264.43 ± 66.6 | 160–591 |
Surgery time (minutes) | 217.8 ± 68.4 | 115–566 |
Gender | ||
Male | 17 (34.69%) | |
Female | 32 (65.31%) | |
ASA classification | ||
Class 2 | 7 (14.29%) | |
Class 3 | 42 (85.71) | |
Total spine levels | ||
3 | 20 (41.67%) | |
4 | 11 (22.92%) | |
5 | 9 (18.75%) | |
6 | 3 (6.25%) | |
8 | 1 (2.08%) | |
9 | 3 (6.25%) | |
13 | 1 (2.08%) | |