Time after operation | Patient 1 | Patient 2 | Patient 3 | |||

Treatedside | Normalside | Treatedleft side | Treatedright side | Treatedside | Normalside | |

(A) Airway D_{H} (mm) | ||||||

Preoperative | 1.7 ± 1.3n = 28 | 3.2 ± 0.4n = 7 | 2.2 ± 1.0n = 20 | 4.0 ± 0.6n = 11 | 1.7 ± 1.3n = 19 | 4.0 ± 1.2n = 18 |

1 month | 2.5 ± 0.4*n = 28 | 2.9 ± 0.4n = 7 | 4.8 ± 0.5*n = 20 | 5.4 ± 0.6*n = 11 | 3.6 ± 1.2*n = 19 | 3.7 ± 1.1n = 18 |

3 months | 4.6 ± 0.3n = 17 | 4.4 ± 0.4n = 9 | — | — | 4.0 ± 0.1n = 7 | 4.5 ± 0.4n = 15 |

6 months | 3.8 ± 0.4n = 22 | 3.6 ± 0.5n = 7 | — | — | — | — |

12 months | 3.5 ± 0.5n = 20 | 3.9 ± 0.5n = 10 | — | — | — | — |

30 months | 4.0 ± 0.9^{#}n = 20 | 4.5 ± 1.2n = 10 | — | — | — | — |

(B) Airway A^{2} (mm) | ||||||

Preoperative | 4.7 ± 4.2n = 28 | 9.8 ± 2.2n = 7 | 9.9 ± 8.3n = 20 | 20.3 ± 2.6n = 11 | 4.2 ± 4.1n = 19 | 15.7 ± 6.4n = 9 |

1 month | 6.9 ± 0.8*n = 28 | 8.0 ± 2.1n = 7 | 21.8 ± 3.1*n = 20 | 30.8 ± 6.0*n = 11 | 13.9 ± 7.0*n = 19 | 14.1 ± 6.4n = 18 |

3 months | 17.5 ± 2.1n = 17 | 16.5 ± 3.4n = 9 | — | — | 14.9 ± 1.0n = 7 | 22.0 ± 5.3n = 15 |

6 months | 12.1 ± 2.9n = 22 | 11.4 ± 3.2n = 7 | — | — | — | — |

12 months | 10.9 ± 2.4n = 20 | 11.6 ± 3.9n = 10 | — | — | — | — |

30 months Postoperative | 15.0 ± 6.8^{#}n = 20 | 23.1 ± 11.0n = 10 | — | — | — | — |

**P* < 0.01 versus preoperative.

*#**P* < 0.01 versus 1 month, Student’s *t* test (paired, two-sided, α = 0.05).