Risk factors and sonographic findings associated with the type of placenta accreta spectrum disorders
10.3760/cma.j.issn.0529-567x.2019.01.007
- VernacularTitle:影响胎盘植入程度的危险因素及其超声影像学表现分析
- Author:
Huijing ZHANG
1
;
Ruochong DOU
;
Li LIN
;
Qianyun WANG
;
Beier HUANG
;
Xianlan ZHAO
;
Dunjin CHEN
;
Yiling DING
;
Hongjuan DING
;
Shihong CUI
;
Weishe ZHANG
;
Hong XIN
;
Weirong GU
;
Yali HU
;
Guifeng DING
;
Hongbo QI
;
Ling FAN
;
Yuyan MA
;
Junli LU
;
Yue YANG
;
Li LIN
;
Xiucui LUO
;
Xiaohong ZHANG
;
Shangrong FAN
;
Huixia YANG
Author Information
1. 北京大学第一医院妇产科 100034
- Keywords:
Placenta accreta;
Ultrasonography;
Risk factors
- From:
Chinese Journal of Obstetrics and Gynecology
2019;54(1):27-32
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the risk factors and sonographic findings of pregnancies complicated by placenta increta or placenta percreta. Methods Totally, 2219 cases were retrospectively analyzed from 20 tertiary hospitals in China from January 2011 to December 2015. The data were collected based on the original case records. All cases were divided into two groups, the placenta increta (PI) group (79.1％, 1755/2219) and the placenta percreta (PP) group (20.9％, 464/2219), according to the degree of placental implantation. The risk factors and sonographic findings of placenta increta or percreta were analyzed by uni-factor and logistic regression statistic methods. Results The risk factors associated with the degree of placental implantation were age, gravida, previous abortion or miscarriage, previous cesarean sections, and placenta previa (all P<0.05), especially, previous cesarean sections (χ2=157.961) and placenta previa (χ2=91.759). Sonographic findings could be used to predict the degree of placental invasion especially the boundaries between placenta and uterine serosa, the boundary between placenta and myometrium, the disruption of the placental-uterine wall interface and loss of the normal retroplacental hypoechoic zone(all P<0.01). Conclusions Previous cesarean sections and placenta previa are the main independent risk factors associated with the degree of placenta implantation. Ultrasound could be used to make a prenatal suggestive diagnosis of placenta accreta spectrum disorders.
