Table 4 Internal diameter of tracheal stenosis before and after treatment
Group | n | Internal diameter of tracheal stenosis before the first interventional therapy (mm, mean ± standard deviation) | Internal diameter of tracheal stenosis Mid-term (3 months after the operation) (mm, mean ± standard deviation) | Internal diameter of tracheal stenosis Long-term (12 months and above after the operation) (mm, mean ± standard deviation) |
|---|---|---|---|---|
Scar hyperplasia | 32 | 3.6 ± 0.6 | 6.6 ± 0.3 | 6.5 ± 0.4 |
Repair under scar formation | 32 | 3.7 ± 0.5 | 6.8 ± 0.9 | 6.7 ± 0.7 |
Mature scars | 32 | 3.6 ± 0.9 | 6.9 ± 0.7 | 6.7 ± 0.8 |