Table 2.
Comparison of block characteristics between the two groups.
| S. NO | Variables | Group 1 (n=30) Supine | Group 2 (n=30) Head up | P-value |
|---|---|---|---|---|
| 1. | Onset of sensory block (seconds) | 125.66±49.94 | 143±45.04 | P=0.1632 |
| 2. | Maximum sensory block | |||
| T4 | 1 | 0 | P=0.0001 | |
| T5 | 1 | 0 | ||
| T6 | 13 | 4 | ||
| T7 | 1 | 4 | ||
| T8 | 1 | 4 | ||
| T9 | 14 | 10 | ||
| 3. | No. of segments blocked above T8 | 16 | 8 | P≤0.05 |
| No. of segments blocked at T8 or below T8 | 14 | 22 | ||
| 4. | No. of segments | 5.13±1. 16 | 4.02±1.05 | P=0.0001 |
| 5. | Onset of motor block (seconds) | 297.66±62.7 | 279.66±63.43 | P=0.2737 |
| 6. | Two-segment regression time (min) | 72±7.94 | 86.16±12.50 | P=0.0001 |
| 7. | Duration of sensory block till T12 (min) | 123.33±17.6 | 144±18.21 | P=0.0001 |
| 8. | Duration of motor block (min) | 80.33±11.0 | 85.66±10.8 | P=0.0648 |
| 9. | Duration of analgesia (min) | 165.4±6.79 | 180.13±8.47 | P=0.0001 |