Objective: To compare the effectiveness of temporary aortic ligation (TAL) and lower abdominal aortic balloon occlusion (LABO) in preventing hemorrhage during cesarean section in women with dangerous placenta previa complicated by placenta accreta. 
Methods: The clinical data of 84 patients with dangerous placenta previa and concomitant placenta accreta giving birth in the Maternal and Child Health Hospital of Hunan Province from January 2016 to July 2018 were reviewed. Of the patients, 48 cases underwent open TAL and 36 cases underwent temporary LABO to prevent hemorrhage. The variables that included the preoperative general conditions, intraoperative parameters, postoperative results and newborns’ conditions between the two groups were compared.
Results: There were no significant differences in age, times of pregnancy and childbirth, delivery interval, gestational weeks, and placental score between the two groups of patients (all P>0.05). There were no significant differences in time of cesarean section, intraoperative blood loss, amount of packed red blood cell transfusion, and hysterectomy rate between the two groups of patients (all P>0.05). There were no significant differences in Apgar score and weight of the newborn as well as the length of hospital stay between the two groups of patients (all P>0.05). The incidence of vascular complications after cesarean section was significantly higher and the hospitalization cost was significantly lower in TAL group than those in LABO group (19.4% vs. 0; 40 278 yuan vs. 29 100 yuan, both P<0.05).
Conclusion: In cesarean section for pregnancies with dangerous placenta previa complicated by placenta accreta, the hemostatic effects and hysterectomy rates of TAL and LABO are similar, but the former is more safe and cost-effective with lesser incidence of complications, so it is recommended to be used.