Benefits of Routine Suprahyoid Release in Tracheal Resection for Post-Intubation Stenosis

Overview

This prospective study evaluates the use of routine suprahyoid muscle release during tracheal resection and anastomosis in adult patients with post-intubation stenosis. The technique aims to reduce anastomotic tension and improve surgical outcomes while minimizing complications such as dysphagia and aspiration.

Background

Tracheal resection and anastomosis have evolved significantly since early 20th-century beliefs that cartilage healed poorly and resections should be limited to 2 cm. Advances demonstrated that longer segments could be safely resected with proper mobilization and release maneuvers to reduce anastomotic tension. The suprahyoid release maneuver, first described in 1974, allows laryngeal drop without injuring critical nerves and vessels, decreasing postoperative laryngeal dysfunction. Videofluorographic swallowing studies (VFSS) are used to assess swallowing function and aspiration risk postoperatively.

Data Highlights

The study included adult patients undergoing tracheal resection with suprahyoid release from June 2020 to December 2023. Preoperative data collected included age, sex, intubation duration, tracheostomy status, lesion level, and stenosis degree. Surgical details such as incision type, number of tracheal rings removed, and operation type were documented. VFSS assessed swallowing function postoperatively, focusing on aspiration, penetration, swallow delay, laryngeal elevation, and residue presence.

Key Findings

• Suprahyoid release allows safe mobilization of the larynx and reduces anastomotic tension in extended tracheal resections.
• The maneuver preserves the digastric muscle slings and avoids injury to superior laryngeal vessels and nerves, minimizing postoperative complications.
• VFSS effectively detects aspiration, penetration, and swallowing impairments, guiding postoperative management.
• Routine use of suprahyoid release in tracheal surgery may decrease the incidence of laryngeal dysfunction compared to earlier laryngeal release techniques.
• The procedure is performed through a low transverse collar incision with careful dissection around the hyoid bone and attached muscles.

Clinical Implications

Incorporating routine suprahyoid release during tracheal resection can facilitate tension-free anastomosis, potentially improving surgical outcomes and reducing complications such as aspiration and dysphagia. VFSS should be employed postoperatively to monitor swallowing function and guide rehabilitation. Surgeons should carefully preserve critical anatomical structures during the release to minimize morbidity.

Conclusion

Routine suprahyoid muscle release is a valuable adjunct in tracheal resection and anastomosis for post-intubation stenosis, enabling safer resections with reduced anastomotic tension and lower risk of laryngeal dysfunction. Postoperative swallowing assessment via VFSS is essential for optimal patient management.

References

1. Rob and Bateman 1949 -- Experience with Tracheal Resection
2. Montgomery 1974 -- Suprahyoid Laryngeal Release Maneuver
3. Dedo and Fishman -- Laryngeal Release Techniques
4. Baumann and Foster -- Tracheal Mobilization Length
5. Mulliken and Grillo 1968 -- Tracheal Resection Length and Mobilization
6. Langmore et al. -- Videofluorographic Swallowing Study (VFSS) Utility