Abstract:
Objective
To explore the  diagnostic value of fiber bronchoscopy in neonates with congenital airway dysplasia.
Methods
A retrospective study on the results of fiberoptic bronchoscopy was performed in 89 neonates with airway dysplasia.
Results
A total of 89 neonates were examined by fiberoptic bronchoscopy. Among the cases of throat abnormalities, there were 65 cases of laryngomalacia, 4 cases of congenital epiglottis cyst,3 cases of congenital laryngeal web,1 case of hemangioma on the glottis and 1 case of bilateral vocal cord paralysis; those with trachea-bronchial abnormalities included 52 cases of tracheomalacia; there were 20 cases of tracheal stenosis, including 12 cases of simple tracheal stenosis, 6 cases of secondary tracheal stenosis and 2 cases of tracheal bronchus; there were 3 cases of tracheoesophageal fistula, 1 case of tracheal papilloma,1 case of right tracheal absence and 1 case of the left and right bronchi translocation. The most common complications of fiberoptic bronchoscopy were hypoxia and transient decline of heart rate. They all can be returned to normal after treatment.
Conclusion
Fiber bronchoscopy plays an important role in diagnosis of airway dysplasia in neonates, and it's safe and reliable.

Key words: Airway dysplasia, Fiber bronchoscopy, Infant,newborn