Table 1.
Comparison of clinical characteristics between hypotension and normotensive group
| Hypotension group (n = 164) | Normotensive group (n = 148) | t/x2 | P | |
|---|---|---|---|---|
| Age (years) | 30.5±5.0 | 30.25±5.6 | 0.386 | 0.700 |
| BMI | 21.9±1.2 | 21.7±1.5 | 0.836 | 0.404 |
| ASA Level | 2.719 | 0.099 | ||
| I | 84 (51.2%) | 86 (58.1%) | ||
| II | 80 (48.8%) | 62 (41.9%) | ||
| Fasting time (<16 h) | 132 (80.5%) | 118 (79.7%) | 0.028 | 0.867 |
| Preoperative infusion volume | 382.2±161.4 | 387.9±115.4 | 0.353 | 0.724 |
| Diabetes | 32 (19.5%) | 26 (17.6%) | 0.087 | 0.985 |
| Hypertension | 14 (8.5%) | 10 (6.8%) | 0.347 | 0.556 |
| Coronary heart disease | 32 (19.5%) | 30 (20.2%) | 0.028 | 0.867 |
| Anemia | 78 (47.6%) | 62 (41.9%) | 1.011 | 0.315 |
| Hypoproteinemia | 83 (50.6%) | 58 (39.2%) | 4.097 | 0.043 |
| Electrolyte disturbance | 85 (51.8%) | 73 (49.3%) | 0.195 | 0.659 |
| Dosage of bupivacaine (ml) | 11.1±1.3 | 11.1±1.1 | 0.527 | 0.599 |
| Sensory blockade time (min) | 116.6±20.2 | 116.1±13.4 | 0.256 | 0.798 |
| The highest level of anesthesia | T7.9±0.6 | T7.8±0.6 | 1.443 | 0.150 |