【Objective】 To analyze the influence of placenta previa with scarred uterus on mother and neonate. 【Methods】 To analysis 71 cases of scarred uterus pregnancy with placenta previa reviewly. These cases who were deliveried in Department of Obstetrics

the First Affiliated Hospital of Sun Yat-sen University from January 2007 to January 2012. Among these cases

49 cases had a history of cesarean section

for the cesarean section group; and 22 cases had previously myomectomy

for the myomectomy group. 【Results】 All 71 cases were deliveried by cesarean section.The mean pregnant weeks of the two groups were 36.5±2.9 weeks and 36.6±2.1 weeks

respectively; the rate of postpartum hemorrhage of the two groups were 46.9% and 31.8%

respectively; the occurrence of preterm birth of the two groups were 46.9% and 36.4%

respectively. The incidence of placenta accreta of the Caesarean section group was 28.6%

and the rate of disseminated intravascular coagulation and hysterectomy all was 16.3%. The myomectomy group did not have cases of placenta accreta

disseminated intravascular coagulation and hysterectomy. The incidence of postpartum hemorrhage

placenta accreta

preterm birth

hysterectomy of the Caesarean section group was obviously higher than those of the myomectomy group (P < 0.05). 【Conclusion】 Placenta previa with previous cesarean section higherly increased the pregnancy complications than the placenta previa with previous myomectomy. It should be strictly grasp cesarean section indications

then reduce cesarean section rate and the maternal complications.