A Clinical Study Of Placenta Previa For 2012-2016

Objective:To summarize the clinical data of cases of placenta previa in our hospital fro m 2012 to 2016,including the average gestational age of the patient's termination of pregnancy,the last obstetric B-placenta attachment site before delivery,placental i mplantation,postpartum hemorrhage,infusion of concentrated red blood cells,and resection of the uterus assesses clinical risk and guides clinical intervention.Methods:To collect patients with placenta previa of placenta previa who were admitted to the First Affiliated Hospital of Shanxi Medical University from January 2012 to December2016,based on previous history of cesarean section and the last obstetric period before delivery.The placenta of the extra placenta was divided into three groups: A,B,and C.They were:(1)Group A-Dangerous placenta previa group: history of previous cesarean section and placenta in uterine scar;group B-cesarean section placenta previa group:previous history of cesarean section and placenta outside the uterine scar;group C-placenta previa group: no history of cesarean section.To summarize the incidence of placenta previa with 2012-2016 risk of placenta previa,by comparing the average gestational weeks of termination of pregnancy,the last obstetric B-placenta attachment site before delivery,placenta implantation,postpartum hemorrhage,infusion of concentrated red blood cells and uterine resection,clinical data on those aspects in the three groups of patients were analyzed statistically.Results:(1)The incidence of dangerous placenta previa in placenta previa increased from2.0% in 2012 to 29.1% in 2016.The incidence of dangerous placenta previa has increased over the past five years.(2)In Group A,the average gestational age of the patient's termination of pregnancy was(36.9 ± 2.2)weeks;in Group B,the average gestational age of the patient's termination of pregnancy was(36.3 ± 2.3)weeks;in Group C,the average gestational age of the patient's termination of pregnancy was(36.6±2.5)weeks.(3)In group A,the placenta was mainly located in the anterior wall of the uterus,accounting for 31.3%(15/48)of all the attachment sites;in groups B and C,the placenta was mainly located in the posterior wall of the uterus,accounting for 31.4% of all sites of attachment(11/ 35),36.7%(72/196).(4)In group A,77.1%(37/48)of placenta accreta occurred;in group B,the percentage of placenta accreta occurred in 57.1%(20/35);in group C,37.8% of placenta accreta occurred.%(74/196).(5)In group A,B and C,the incidence of postpartum hemorrhage was 52.1%(25/48),28.60%(10/35),and 21.9%(43/196),respectively.The incidence of infused red blood cells was 41.7 respectively.%(20/48),20.00%(7/35),15.3%(30/196),the incidence of hysterectomy was 20.8%(10/48),0.00%(0/35),1.5%(3 /196),compared the incidence of postpartum hemorrhage,infusion of concentrated red blood cells and hysterectomy in the three groups A,B,and C,respectively,and the differences were statistically significant.Conclusion:Dangerous placenta previa in the incidence of placenta previa increased year by year,the placenta implantation,postpartum hemorrhage,infusion of concentrated red blood cells and the incidence of uterine excision are relatively high,is the maternal pregnancy outcome adverse events.Pregnant women should do regular pregnancy checks,eliminate non-medical indications of cesarean section,regular B-ultrasound,early detection,early diagnosis,early prevention.It is recommended that obstetricians strictly comply withsurgical indications,limit non-medical indications of cesarean section,promote natural delivery,and improve pregnancy outcomes.