Reconstructive procedures for impaired upper airway function: laryngeal respiration.

Area of Science:

• Otolaryngology
• Laryngology
• Surgical Innovation

Background:

• The larynx, as the airway's bottleneck, faces critical respiratory compromise from stenosing pathologies.
• Severe inspiratory collapse (laryngomalacia) necessitates internal stabilization for laryngeal respiratory function recovery.
• Bilateral vocal cord motion impairment presents significant challenges to airway patency.

Purpose of the Study:

• To review current and emerging surgical techniques for managing severe laryngeal pathologies.
• To highlight advancements in endoscopic laser surgery, reconstructive procedures, and laryngeal transplantation.
• To discuss future directions in laryngeal reinnervation and functional restoration.

Main Methods:

• Review of contemporary surgical approaches including laser cordotomy, cordectomy, arytenoidectomy, and open procedures.
• Discussion of reconstructive techniques utilizing composite grafts for extensive laryngeal defects.
• Analysis of autologous laryngeal transplantation, including associated immunological and reinnervation challenges.
• Exploration of reanimation strategies for the bilaterally paralyzed larynx: neurorrhaphy, neural grafting, and electrostimulation.

Main Results:

• Endoscopic laser surgeries (cordotomy, cordectomy) are increasingly preferred over open procedures for vocal cord motion impairment due to lower morbidity.
• Composite grafts provide effective coverage for extensive laryngeal defects, restoring structure and vascularization.
• Autologous laryngeal transplantation is now manageable, though reinnervation and immunosuppression risks remain areas of focus.
• Electrostimulation and genetic therapies show promise for reanimating the paralyzed larynx and modulating aberrant reinnervation.

Conclusions:

• Modern surgical techniques, particularly endoscopic laser procedures and reconstructive grafting, have significantly improved outcomes for laryngeal stenosis and defects.
• Laryngeal transplantation is a viable option, with ongoing research addressing post-transplant challenges.
• Future advancements in neural repair and functional electrostimulation hold promise for restoring function in the bilaterally paralyzed larynx.