Essential Site Maintenance: Authorea-powered sites will be updated circa 15:00-17:00 Eastern on Tuesday 5 November.
There should be no interruption to normal services, but please contact us at [email protected] in case you face any issues.

loading page

Further experience with polydioxanone airway stents in children.
  • +5
  • Juan Anton-Pacheco,
  • Rocio Morante,
  • María Díaz,
  • Mª Carmen Luna-Paredes,
  • Sara Proaño,
  • Cecilia Castellano,
  • Mª Dolores Méndez,
  • Victoria Ramos
Juan Anton-Pacheco
Instituto de Investigacion Hospital 12 de Octubre

Corresponding Author:[email protected]

Author Profile
Rocio Morante
Instituto de Investigacion Hospital 12 de Octubre
Author Profile
María Díaz
Instituto de Investigacion Hospital 12 de Octubre
Author Profile
Mª Carmen Luna-Paredes
Hospital Universitario 12 de Octubre Inmunodeficiencias Bebes y Pediatria General
Author Profile
Sara Proaño
Instituto de Investigacion Hospital 12 de Octubre
Author Profile
Cecilia Castellano
Instituto de Investigacion Hospital 12 de Octubre
Author Profile
Mª Dolores Méndez
Hospital Universitario 12 de Octubre Centro de Investigacion Biomedica
Author Profile
Victoria Ramos
Instituto de Investigacion Hospital 12 de Octubre
Author Profile

Abstract

Introduction The aims of this study were to update our experience with biodegradable polydioxanone (PDO) airway stents in children focusing on effectiveness and safety, and to analyse the factors involved in the different outcomes observed. Materials and methods Retrospective study of patients managed with PDO stents from 2012 to 2023. Variables collected: demographics, comorbidities, indication , clinical baseline, stent size, location, complications, clinical outcome, and time of follow-up. Statistical analyses were performed in order to detect the eventual contribution of variables in the different outcomes observed. Results 54 PDO stents were placed in 26 patients (median age, 4 m). All showed severe symptoms of central airway obstruction due to: tracheomalacia 9 patients, bronchomalacia 5, tracheobronchomalacia 10, and tracheal stenosis 2. Stent placement was uneventful in every case: 29 stents in the trachea and 25 in main bronchi. 53,8% of patients needed successive stenting and all exhibited comorbidities. Complete clinical resolution was observed in 8 cases (30.7%), partial improvement in 13 (50%), unchanged in 4 (15.3%), and worsen in one. Age had a significant positive impact in outcome (6 months vs 3 m.; p=0.024). Additionally, smaller stents were associated with a better outcome (20 vs 26 mm; p=0.044). Granulation tissue was the most frequent complication (34.6%). Five patients (19.2%) died due to severe comorbidities, follow-up was complete in survivors (median, 58 m). Conclusions PDO stents are safe and effective when dealing with severe tracheobronchial obstruction. Stent-related granulation tissue continues to be a relevant matter of concern. This issue together with increased degradation times deserve further research.
01 Feb 2024Submitted to Pediatric Pulmonology
01 Feb 2024Submission Checks Completed
01 Feb 2024Assigned to Editor
01 Feb 2024Review(s) Completed, Editorial Evaluation Pending
28 Feb 2024Reviewer(s) Assigned
08 Apr 2024Editorial Decision: Revise Minor
11 Apr 20241st Revision Received
12 Apr 2024Submission Checks Completed
12 Apr 2024Assigned to Editor