Table 1 Patient demographics
Parameters | Statistics |
|---|---|
Total patients (n) | 136 |
Sex (n) | |
 Female | 55 |
 Male | 81 |
Age, year | 54.1 ± 8.4 |
BMI, kg/m2 | 24.5 ± 3.5 |
Hypertension (n) | |
 No | 104 |
 Yes | 32 |
Diabetes mellitus (n) | |
 No | 107 |
 Yes | 29 |
Smoking (n) | |
 No | 82 |
 Yes | 54 |
Drinking (n) | |
 No | 72 |
 Yes | 64 |
Length of stay, day | 7.3 ± 1.7 |
Diseases groups | |
Lumbar disc herniation | 64 |
Lumbar stenosis | 45 |
Lumbar spondylolisthesis | 27 |
Fusion level (n) | |
 L3-L4 | 12 |
 L4-L5 | 45 |
 L5-S1 | 47 |
ASA classification (n) | |
 I | 50 |
 II | 51 |
 III | 32 |
 IV | 3 |
Surgery time, min | 168.3 ± 52.7 |
PBV, L | 4.9 ± 0.5 |
TBL, ml | 786.5 ± 189.3 |
VBL, ml | 278.2 ± 85.2 |
HBL, ml | 469.5 ± 195.3 |
Preoperative Hb, g/L | 125.1 ± 11.6 |
Preoperative Hct | 37.6 ± 4.6 |
Postoperative Hb, g/L | 107.2 ± 13.5 |
Postoperative Hct | 31.9 ± 4.1 |
Hb loss, g/L | 17.9 ± 2.5 |
Hct loss | 5.7 ± 1.6 |
Preoperative ALB, g/L | 41.2 ± 3.5 |
PT, s | 11.9 ± 1.1 |
APTT, s | 29.1 ± 5.2 |
Platelet, g/L | 251.8 ± 49.8 |
Fibrinogen, g/L | 3.4 ± 0.5 |