French experience of silicone tracheobronchial stenting in children

Area of Science:

• Pediatric Pulmonology
• Biomaterials Science
• Medical Device Engineering

Background:

• Airway obstruction in children presents significant management challenges.
• Tracheal and bronchial stenting is an emerging therapeutic option for pediatric airway disorders.
• Silicone stents offer potential biocompatibility advantages over metal stents.

Purpose of the Study:

• To evaluate the feasibility and outcomes of silicone stent placement in pediatric patients.
• To identify factors contributing to the success or failure of silicone stents in airway management.
• To compare the performance of silicone stents with existing literature on metal stents.

Main Methods:

• Retrospective analysis of 14 pediatric patients (aged 2-69 months) who underwent tracheal or main-stem bronchial silicone stent insertion.
• Indications included tracheomalacia, airway kinking, vascular compression, and congenital tracheal stenosis.
• Outcomes assessed included technical success, clinical success, duration of stent placement, complications, and biocompatibility.

Main Results:

• Overall success rate was 43% (6/14), with the best outcomes in tracheomalacia.
• Stent migration was the primary cause of failure in 5 cases, suggesting a need for larger stent sizes.
• Complications were infrequent, including one case of stent obstruction; no wall erosion occurred. Silicone stents demonstrated good biocompatibility.

Conclusions:

• Silicone stent placement is a feasible therapeutic option for specific pediatric airway disorders.
• Optimizing stent size is crucial to improve stability and reduce migration-related failures.
• Further research is warranted to establish the long-term efficacy and safety of silicone stents in pediatric airway management.