Continuous and separate stitch single-layer sutures of colon-colic anastomosis

ABSTRACT

Two types of single-layer sutures in intestinal anastomoses were compared in female dogs regarding safety, time of execution of anastomoses, amount of thread used, histopathology, impermeability and resistance to tension. Two colon anastomoses were carried out in each animal with either continuous or separate-stitch suture (monofilament nylon 4-0 thread). Before surgery the animals underwent intestinal cleaning and they were sacrificed on day 28 after the operation. Impermeability and resistance to tension by gaseous insufflation were tested, in five animals, immediately after surgery. Regarding safety, impermeability, border coaptation, inflammatory reaction and cicatrization in both types of suture presented similar results. Time of execution of the anastomosis was shorter for continuous suture and amount of thread used was smaller than for separate-stitch suture, representing lower cost for this type of anastomosis.