title: [Experimental study of preventing postoperative stenosis by modifying artificial esophagus in dogs].
abstract: OBJECTIVE
  To observe the effect of the modified artificial esophagus on postoperative stenosis in dogs.
  
  
  METHODS
  The models of defected esophagus were established in dogs. The double-layered membrane tube (modifying type) was implanted in the test group (n = 10) and the esophageal stent was further inserted when the stenosis occurred. The single pattern tube (original type) was transplanted to the control group (n = 30). The dilation treatment was performed to relieve the postoperative stenosis; alternatively, the esophageal stent was implanted in the unsuccessful dogs.
  
  
  RESULTS
  The average artificial esophagus removal time was 19.10 days in the test group, which was significantly lower than 39.07 days in the control group (t = 15.6, P = 0.000). No obstruction after removal was observed in the experimental group. The incidence of postoperative stenosis had no significant difference between these two groups.
  
  
  CONCLUSIONS
  The double-layered membrane tube can make the tube removal safer by shortening the removal time.
authors.affiliation: State Key Laboratory of Oncology in Southern China, Department of Thoracic Surgery, Cancer Center, Sun Yat-sen University, Guangzhou 510060, China. lj.zhang@medmail.com.cn
authors.forename: Lan-Jun
authors.initials: LJ
authors.lastname: Zhang
authors.forename: Tie-Hua
authors.initials: TH
authors.lastname: Rong
authors.forename: Guo-Liang
authors.initials: GL
authors.lastname: Xu
authors.forename: Xiao-Dong
authors.initials: XD
authors.lastname: Su
authors.forename: Fa-Chao
authors.initials: FC
authors.lastname: Zhi
authors.forename: Xiao-Ming
authors.initials: XM
authors.lastname: Guo
authors.forename: Peng-Yuan
authors.initials: PY
authors.lastname: Zhang
mesh_terms: D000818:Animals; D001187:Artificial Organs; D004285:Dogs; D004940:Esophageal Stenosis / Q000517:prevention & control*; D016629:Esophagectomy; D004947:Esophagus / Q000637:transplantation*; D005260:Female; D008297:Male; D011183:Postoperative Complications / Q000517:prevention & control*; D011897:Random Allocation