Effect of cesarean section suture methods on formation of uterine scar diverticulum

Abstract

Objective To explore the effect of cesarean section suture methods on the formation of uterine scar diverticulum. Methods From January, 2016 to December, 2018, there were 788 parturients after Cesarean section who met the inclusion criteria, 396 in an observation group and 392 in a control group. All the parturients underwent routine cesarean section through transverse incision of the lower uterine segment. Double-layer continuous suture method was used in the observation group, while single-layer continuous suture method in the control group. The bleeding volume during operation, operation time, duration of bloody lochia after operation, time for anal exhaust and total days of hospitalization were compared between the two groups. One year after the operation, uterine scar diverticulum was screened by transvaginal three-dimensional colorful ultrasound. The volume of diverticulum and the thickness of muscle layer were recorded and analyzed. The incidences of diverticulum in the two groups were compared. Results There were no statiatical differences in the bleeding volume during operation, operation time, duration of bloody lochia after operation, time for anal exhaust, and total days of hospitalization between the two groups. The diverticulum muscle was thicker and the diverticulum volume and the incidence of diverticulum were lower in the observation group than in the control group (all P<0.05). Conclusion Double-layer continuous suture is the preferred suture method to avoid scar diverticulum formation in cesarean section. Key words: Cesarean section; Uterus; Suture methods; Scar diverticulum