Circumferential resection and "Z"-shape plastic end-to-end anastomosis of canine trachea
Zhao, H.; Li, Z.; Fang, J.; Fang, C.
Chinese Medical Journal 112(3): 278-280
1999
ISSN/ISBN: 0366-6999 PMID: 11593567 Document Number: 503415
To prevent anastomotic stricture of the trachea. 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. 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). "Z"-shape tracheoplasty is superior to simple end-to-end anastomosis in preventing anastomotic stricture of canine trachea.