Routine use of the fiberoptic bronchoscope in PDT can prevent not only injury to the tracheal posterior wall, but also avoid the associated iatrogenic tracheobronchial foreign body retention in the airway.

• 在施行经皮扩张性气管切开术时，例行性使用支气管镜不仅可避免气管后壁之伤害并且可预防异物留滞在呼吸道。