Abstract:Objective To investigate the safety and effectiveness of laparoscopic continuous inverting mattress suture + suction curettage in the treatment of exogenous cesarean scar pregnancy (CSP-Ⅱ).Methods 41 patients with CSP-Ⅱ were selected from January 1 2019 to June 30 2020. They were divided into group A (experiment group, n = 20) and group B (control group, n = 21). Group A underwent laparoscopic continuous inverting mattress suture, Group B underwent laparoscopic hysterotomy. We compared the intraoperative blood loss, operation time, serum β-human chorionic gonadotropin (β-HCG) levels on the first day after operation, time for serum β-hCG levels to return to normal, hemoglobin (HB) on the first day after operation, menstruation recovery time, the decrease rate of serum β-HCG level on the first day after operation compared with 1 day before operation, inpatient time.Results Group A was compared with group B, the serum β-HCG levels on the first day after operation, inpatient time were not statistically significant (P > 0.05); The time for serum β-HCG levels to return to normal and menstruation recovery time in group A were significant longer than those in group B, HB on the first day after operation was significant higher than that in group B, the differences between the two groups were statistically significant (P < 0.05); The intraoperative blood loss in groups A was less than that in group B, the operation time was shorter than that in group B, the difference between the two groups were statistically significant (P < 0.05); The level of serum β-HCG on the first day after operation decreased by more than 50.00% in both groups compared with the 1st preoperative day. In group B, the pathology of the excised scar muscle layer showed that there was a little villus tissue in the muscle layer, and a large number of trophoblast cells were seen between the fibrous smooth muscle tissues.Conclusion Laparoscopic continuous inverting mattress suture+suction curettage in the treatment of CSP-Ⅱ is more simple, less bleeding, shorter operation time, less trauma, resected diverticulum, increase the thickness of the lower uterine segment, shorten the duration of the contraception time, but the decrease of serum β-HCG was slow and the recovery time of menstruation was long.