Endoscopic Management of Subglottic Stenosis

Area of Science:

• Otolaryngology
• Respiratory Medicine
• Surgical Innovation

Background:

• Subglottic stenosis management lacks established optimal strategies.
• Endoscopic techniques include balloon dilation, radial incisions (laser/cold knife), and combined approaches.
• Adjunctive therapies such as mitomycin and glucocorticoid injections are utilized.

Purpose of the Study:

• To evaluate the association between surgical technique, adjunctive measures, and the duration between endoscopic treatments for subglottic stenosis.
• To identify factors influencing the recurrence or need for repeat endoscopic intervention.

Main Methods:

• Retrospective analysis of 101 adult patients with isolated subglottic stenosis undergoing endoscopic treatment from 1995-2015.
• Procedures included laser radial incisions, balloon dilation, or both, with or without topical mitomycin or glucocorticoid injection.
• Primary outcome measure was the time interval between successive endoscopic procedures.

Main Results:

• Mitomycin application was associated with a significant increase in the mean interval between procedures (317 to 474 days).
• No significant difference in surgical intervals was observed based on surgical technique (laser, dilation, or combination) or grade of stenosis.
• Steroid injection did not significantly alter the time between endoscopic treatments.

Conclusions:

• Mitomycin application may prolong the interval between endoscopic treatments for subglottic stenosis.
• Surgical technique and stenosis severity do not appear to influence the need for repeat endoscopic interventions.
• Further research is warranted to optimize management strategies for subglottic stenosis.