Abstract:Objective To investigate the effect and clinical significance of low-order abdominal aorta occlusion in the treatment of dangerous placenta previa.? Methods The clinical data of 58 cases of caesarean section with dangerous placenta previa and implantable or penetrating placenta who received treatment from December 2015 to July 2017 were retrospectively analyzed. The basic methods of cesarean section were:uterine body cesarean section + ligation of bilateral uterine artery descending branch + ligation of bilateral ovarian uterine communicating branch + balloon tamponade of uterine cavity, among which 20 patients received low-order abdominal aorta occlusion and 38 patients received bilateral internal iliac artery ligation in the operation. The operation time, intraoperative bleeding volume, post-operative drainage volume of uterine drainage tube, hospital stay after operation and whether hysterectomy was performed further were compared between the two groups.? Results Compared with the bilateral internal iliac artery ligation group, the intraoperative bleeding volume and post-operative drainage volume were fewer [(2 230.0±1 085.3) ml? vs? (3 647.4±2 652.9) ml, P<0.05; (229.0±164.6) ml? vs? (609.7±175.9) ml, P<0.05], and the operation time and hospital stay were shorter [(120.8±30.2) min? vs? (145.4±33.2) min, P<0.05; (4.3±1.3) d? vs? (6.0±1.9) d, P<0.05]in low-order abdominal aorta occlusion group.? Conclusion Low-order abdominal aorta occlusion is effective in implantable or penetrating placenta cesarean section. Under reasonable operation and preoperative evaluation, it could reduce the amount of bleeding during and after cesarean section effectively, which can be safely applied in clinical practice.