Department of Obstetrics and Gynecology, William Beaumont Hospital, Royal Oak, MI, USA; Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI, USA; Department of Obstetrics and Gynecology, Wayne State University, Detroit, MI, USA.
BJOG. 2014 Jan;121(2):171-81; discussion 181-2. doi: 10.1111/1471-0528.12557.
The incidence of placental attachment disorders continues to increase with rising caesarean section rates. Antenatal diagnosis helps in the planning of location, timing and staffing of delivery. In at-risk women grey-scale ultrasound is quite sensitive, although colour ultrasound is the most predictive. Magnetic resonance imaging can add information in some limited instances. Patients who have had a previous caesarean section could benefit from early (before 10 weeks) visualisation of the implantation site. Current data refer only to placentas implanted in the lower anterior uterine segment, usually over a caesarean section scar.
胎盘附着异常的发生率随着剖宫产率的上升而持续增加。产前诊断有助于规划分娩的地点、时间和人员配备。对于高危产妇，灰阶超声相当敏感，尽管彩色超声更具预测性。磁共振成像在某些有限的情况下可以提供更多信息。有剖宫产史的患者可能受益于早期（10 周前）对胎盘着床部位的可视化检查。目前的数据仅指在前下子宫段着床的胎盘，通常位于剖宫产瘢痕上方。
