Circumferential resection and "Z"-shape plastic end-to-end anastomosis of canine trachea.
OBJECTIVE
To prevent anastomotic stricture of the trachea.


METHODS
Forty young mongrel dogs, weighing 5-7 kg, were randomly divided into two groups: experimental group and control group, with 20 dogs in each group. Four tracheal rings were removed from each dog. In the experimental group, two "Z"-shape tracheoplastic anastomoses were performed on each dog, one on the anterior wall and the other on the membranous part of the trachea. In the control group, each dog received only simple end-to-end anastomosis. Vicryl 3-0 absorbable suture and OB fibrin glue were used for both groups. All dogs were killed when their body weight doubled.


RESULTS
The average sagittal stenotic ratio were 1.20 +/- 0.12 for the experimental group and 0.83 +/- 0.05 for the control group. The average cross-sectional area stenotic ratio were 0.90 +/- 0.12 and 0.69 +/- 0.09 and T values were 8.71 and 4.57 for the two groups (P < 0.01).


CONCLUSIONS
"Z"-shape tracheoplasty is superior to simple end-to-end anastomosis in preventing anastomotic stricture of canine trachea.
Zhao
H
H
Department of Thoracic Surgery, First Affiliated Hospital, China Medical University, Shenyang 110001, China.
Li
Z
Z
Fang
J
J
Fang
C
C
D000714:Anastomosis, Surgical / Q000379:methods; D000818:Animals; D003251:Constriction, Pathologic / Q000517:prevention & control; D004285:Dogs; D005260:Female; D008297:Male; D011183:Postoperative Complications / Q000517:prevention & control*; D011897:Random Allocation; D013514:Surgical Procedures, Operative / Q000379:methods; D014132:Trachea / Q000601:surgery*