Experimental Study On Tracheal Reconstruction Using Platysma Myocutaneous Flap And Nitinol Stent After The Tracheal Circumferential Resection In Dogs

ObjectiveOf the various reconstructive procedures for establishing respiratory continuity after circumferential resection of the trachea, an end-to-end anastomosis is the most physiological method for reconstructing airway with its full diameter and mucociliary function. The resultant trans-anastomotic tensional force must not exceed a critical level to result in a successful outcome. If it fails to reduce the excessive tension at the anastomosis site, the end-to-end anastomosis may be complicated by a disruption and leakage of air or a stricture of the lumen at the anastomosed site.In order to resolve this problem, many scholars have produced a great deal of basic and clinical works. But so far no ideal method has been provided yet. The objectives of this study is to develop a animal model in which the platysma myocutaneous flap and nitinol stent could be created in the dimensions of a circumferential tracheal segment.MethodsSix dogs weighting 15.9kg±1.4kg were included in the experimental study. After general anesthesia, a rectangular skin incision was made in the center of the neck. The pedical of platysma myocutaneous flap was preserved. After exposing the trachea, a circumferential segment of trachea 5cm long( or 8~10 rings) was resected. Then with the platysma myocutaneous flap and nitinol stent, the tracheal...