Table 2. VAS scores of both group.
| I group | S group | t | P | |
|---|---|---|---|---|
| T0 | 6.1±0.7 | 6.2±0.7 | -0.576 | 0.566 |
| T1 | 4.4±1.0 | 2.0±0.8a | 13.186 | 0 |
| T2 | 2.8±0.8 | 0.9±0.8a | 11.907 | 0 |
| T3 | 2.2±0.8 | 0.8±0.7a | 9.27 | 0 |
| T4 | 1.5±0.9 | 0.6±0.8a | 5.379 | 0 |
| T5 | 1.0±0.7 | 0.4±0.5a | 4.729 | 0 |
| T6 | 0.6±0.5 | 0.3±0.5a | 2.671 | 0.009 |
| T7 | 0.3±0.4 | 0.2±0.4 | 0.907 | 0.367 |
| T8 | 0.3±0.4 | 0.2±0.4 | 0.464 | 0.644 |
Abbreviations: Compared with group L, a represented P < 0.05; group I: inhalation group; group S: medial branch block of superior laryngeal nerve group; T0: immediately before treatment; T1: 10 minutes after treatment; T2: 30 minutes after treatment; T3: 1 hour after treatment; T4: 2 hours after treatment; T5: 4 hours after treatment; T6: 8 hours after treatment; T7: 24 hours after treatment; T8: 48 hours after treatment. P values were calculated using t test.