title: [Forty-three tracheal stricture with Ni-Ti shape memory alloy stent].
abstract: OBJECTIVE
  To evaluate the application of Ni-Ti shape memory alloy stent for treating tracheal stricture, including its indications and complications.
  
  
  METHODS
  Forty-three patients clinical data were analyzed, among them, 15 suffered from tumor; 7 trauma; 4 granulation; 1 Wegener's granuloma, 2 rhinoscleroma, 1 without clear diagnosis; 7 were relapsing polychondritis; 1 were respiratory amyloidosis; 4 were tracheobronchial tuberculosis, 5 were tracheobronchomalacia. The stricture degree: Level I: 15 patients, Level II:24 patients, Level III:4 patients. The location of stricture in 5 patients extended to the subglottis area. All patients had tracheal stricture and accepted the treatment with Ni-Ti shape memory alloy stent.
  
  
  RESULTS
  Forty-two patients breathed freely after the operation, 1 patient died after surgery. The tracheostoma in 18 patients was closed 34 days after operation. Among the remaining 8 patients with tracheostoma:3 patients left hospital with tracheal cannula; 1 patient died,2 patients were found stent shifted and no evident breath improving; 2 patients were found granulation and had secondary operation with laser.
  
  
  CONCLUSIONS
  Ni-Ti shape memory alloy stent can expand the tracheal stricture quickly and thus improve the breath effectively, which is minimally invasive and simple. It can be used as a method in the treatment of tracheal stricture.
authors: Department of Otolaryngeal-Head and Neck Surgery, Peking Union Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100730, China.
authors: Hai-Ji
authors: HJ
authors: Yi
authors: Bao-Quan
authors: BQ
authors: Zhang
authors: Wei
authors: W
authors: Liu
authors: Pei-Hong
authors: PH
authors: Peng
authors: Xiu-Zhen
authors: XZ
authors: Shi
authors: Yan
authors: Y
authors: Zhang
authors: Lin
authors: L
authors: He
authors: Hong
authors: H
authors: Jiang
authors: Bo-Jun
authors: BJ
authors: Wei
authors: Fang
authors: F
authors: Qi
authors: Zi-Dong
authors: ZD
authors: Jiang
authors: Xiao-Li
authors: XL
authors: Zhu
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009333:Neck / Q000601:surgery; D009532:Nickel; D012189:Retrospective Studies; D015607:Stents; D014025:Titanium; D014135:Tracheal Stenosis / Q000601:surgery*
chemical_list: C040654:titanium nickelide; D009532:Nickel; D014025:Titanium