Objective To explore the application value of double incision of uterus combined with modified cho suture under vascular occlusion of low abdominal aorta in pernicious placenta previa complicated with implantation.

Methods A total of 95 patients with pernial placenta previa who underwent low abdominal aortic occlusion were divided into the observation group (n = 49) and control group (n = 46) based on different incisions and suture methods. Both groups were treated with low abdominal aortic occlusion. Among them, the observation group received double incision of uterus combined with modified Cho suture, while the control group received single incision of uterus combined with traditional suture methods. A propensity score model was established based on binary logistic regression analysis. The baseline data of the two groupsage, gestational weeks, number of pregnancies, number of deliveries, history of cesarean section and comprehensive score of ultrasound combined with MRI diagnosis were matched 1:1 by the nearest neighbor matching method. After balancing the baseline data of two groups, a total of 40 pairs of patients with no statistically significant difference in baseline data were obtained. The intraoperative relevant indicators, postoperative recovery conditions and occurrence of complications bewteen two groups were compared.

Results The operation time, intraoperative blood loss and blood transfusion volume in the observation group were all lower than those in the control group, and the differences were statistically significant (P ＜ 0.01). There was no statistically significant difference in the comparison of hysterectomy between two groups (P ＞ 0.05). The hospitalization time and amount of bleeding within 24 hours after surgery in the observation group were both lower than those in the control group, and the differences were statistically significant (P ＜ 0.01). There was no statistically significant difference in the incidence of postoperative complications between two groups (P ＞ 0.05).

Conclusions For patients with high score pernishing placenta previa complicated with implantation, the application of low abdominal aortic occlusion, double incision of uterus combined with modified Cho suture can effectively reduce the intraoperative and postoperative bleeding, shorten the operation and recovery time, and does not increase the risk of postoperative complications for parturients. It has clinical application value.