[Forty-three tracheal stricture with Ni-Ti shape memory alloy stent].
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.
Yi
Hai-Ji
HJ
Department of Otolaryngeal-Head and Neck Surgery, Peking Union Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100730, China.
Zhang
Bao-Quan
BQ
Liu
Wei
W
Peng
Pei-Hong
PH
Shi
Xiu-Zhen
XZ
Zhang
Yan
Y
He
Lin
L
Jiang
Hong
H
Wei
Bo-Jun
BJ
Qi
Fang
F
Jiang
Zi-Dong
ZD
Zhu
Xiao-Li
XL
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*
C040654:titanium nickelide; D009532:Nickel; D014025:Titanium