[A study on the application of Nickle-Titanium alloys stent for prevention and treatment tracheostomal stenosis after total laryngectomy].

Objective: To evaluate the effect of Nickle-Titanium alloys annular stent to prevent and treatment tracheostomal stenosis after total laryngectomy.

Method: The stent was used following total laryngectomy and after total laryngectomy.

Result: Long stent was implanted in 2 cases following total laryngectomy and in 1 cases after total laryngectomy, Which resulted in widening stenosis and relieving obstruction of airway. The tracheostomal diameter is 2 cm afterwards, but the patients have crusts, granuloma and stretch feeling in tracheostoma. Tracheostomaplasty was performed using short stent in 18 cases during laryngectomy. All the cases have no tracheostomal stenosis following over 6 months. The tracheostoma is smooth, enough larger and stable.

Conclusion: Nickle-Titanium alloys annular short stent is fixed outside the wall of trachea, its complication is less. It may prevent from tracheostomal stenosis. Nickle-Titanium alloys annular long stent is a better method to resolve dyspnea.