| Object: To understand the population characteristics and risk factors of the placenta previa and its effects on pregnancy outcome.Methods:Our survey was a retrospective study which selected 118 cases of placenta previa as the observe group between January 2011 to January 2014 according to the proportion of 1:1 from randomly selected 118 cases as the control group in hospital childbirth puerpera to eliminate pathological pregnancy of placenta previa. We collected the clinical data of pregnant women and infants of the two groups to understand the pregnant women’s population characteristics about each group by comparing the pregnant women demographic characteristics about the different groups. We could understand the placenta previa or special types of potential risk factors of placenta previa happened by comparing the pregnant women’s gestation and birth of the different groups. We could understand the placenta previa or the special types of placenta previa effects on pregnancy outcome by comparing the intrapartum and postpartum and neonatal situation of the different groups pregnant women,Results1. The incidence of placenta previa in our hospital were 0.4%,0.65% and 0.82%, from 2011 to 2014 which is overall on the rise.2. Compared with the pregnant women demographic characteristics of the two groups: the age of pregnant women in the observe group is significantly higher than control group (p< 0.05); The difference of pregnancy times which the former compared with the latter about the difference had a statistical significance (p< 0.05).3. Compared with the potential risk factors of the two groups’pregnant women:the pregnant women age, history of previous cesarean section and the history of abortion rate in the observe group were significantly higher than that in the control group (p< 0.05).4. Compared with the pregnant women during pregnancy and childbirth complications result of the two groups:the observation group of pregnant women with the of rate cesarean delivery to the termination of pregnancy, antenatal bleeding rate, the incidence of postpartum hemorrhage, anemia, placenta implantation were significantly higher than that of control group (p< 0.05).5. Compared with the pregnant women’ neonatal outcome of the two groups:birth weight, body length and head circumference in the observe group were significantly lower than that in the control group (p< 0.05); the proportion of preterm infants and newborn asphyxia rate in the observe group were significantly higher than that in the control group (p < 0.05).6. Stratified analysis of pregnancy outcomes of placenta previa which were divided according to the location of the placenta and intracervical mouth:it could be divided into complete placenta previa, part and borderline according to the location of the placenta and intracervical mouth and three groups of types of pregnant women, compared the incidence of postpartum bleeding and postoperative blood transfusion and preterm birth had a significant difference (p < 0.05).7. Stratified analysis of pregnancy outcomes of placenta previa which were divided according to whether it is a disaster type:that could be divided into and regular, the pregnant women age, pregnancy time, production time, antenatal bleeding rate of the dangerous group were significantly higher than that of normal group (p < 0.05); The delivery gestational age of the former was significantly earlier than of the latter (p < 0.05); The operation time, intraoperative blood loss, intraoperative and postoperative blood transfusion percentage, the incidence of placenta implantation and uterus resection rate in the former group were significantly higher than that in the latter group (p < 0.05); The babies born to women who took birth weight in the dangerous group was significantly lower than in the normal group and the same with the incidence of preterm birth,1 min Apgar score and neonatal asphyxia rate (p < 0.05).Conclusions1. There is an upward trend in the incidence of placenta previa.2. Pregnant women aged, maternal time increased and the history of cesarean section were potential dangerous factors of placenta previa.3. The population characteristics, risk factors and the impact on the pregnancy outcome were differences in different types of placenta previa. |
PDF Full Text Request