<b>Update on Management of Placenta Previa and Placenta Accreta Spectrum</b>

<i>Placenta previa is a major risk factor for postpartum hemorrhage and can lead to morbidity and mortality of the mother and neonate. This situation prevents a safe vaginal delivery and requires the delivery of the neonate to be via cesarean delivery. The presence of placenta previa can also increase a woman's risk for placenta accreta spectrum (PAS).</i><b><i>Objectives</i></b><i>:</i><i> </i><i>In this article; we aimed to review the update on management of placenta previa and placenta accreta spectrum, </i><b><i>Methods</i></b><i>: These databases were searched for articles published in English in 3 data bases [PubMed – Google scholarscience direct] and Boolean operators (AND, OR, NOT) had been used such as [Diagnosis of Placenta Accreta and Placenta Accreta Spectrum OR PAS] and in peer-reviewed articles between June 2005 and February 2023. Documents in a language apart from English have been excluded as sources for interpretation was not found. Papers apart from main scientific studies had been excluded: documents unavailable as total written text, conversation, conference abstract papers and dissertations. </i><b><i>Conclusion</i></b><i>: The timely diagnosis of abnormal placentation is of great importance since, the earliest diagnosis implies less risky, less costly and successful management. Ultrasonography may successfully achieve this goal. Furthermore, MRI imaging, in cases of diagnostic dilemmas may be particularly useful and lead to safer and more precise diagnosis</i><i>DOI:10.6084/m9.figshare.24201264</i>

前置胎盘（placenta previa）是产后出血的主要危险因素，可导致孕产妇及新生儿的发病率与死亡率升高。该病症会阻碍安全的阴道分娩，需通过剖宫产完成新生儿娩出。此外，前置胎盘还会增加产妇罹患胎盘植入谱系疾病（placenta accreta spectrum, PAS）的风险。
**研究目的**：本文旨在综述前置胎盘与胎盘植入谱系疾病的诊疗进展。
**研究方法**：本研究检索了PubMed、Google Scholar、Science Direct三个数据库中2005年6月至2023年2月期间发表的英文同行评议论文，检索采用布尔逻辑运算符（AND、OR、NOT），检索式为「胎盘植入诊断 AND 胎盘植入谱系疾病 OR PAS」。本研究排除非英文文献（因缺乏对应解读语言支持）、非核心科学研究类文献，以及无法获取完整全文的文献、通讯文稿、会议摘要与学位论文。
**研究结论**：异常胎盘植入的及时诊断至关重要，越早诊断，治疗的风险越低、成本越少且成功率越高。超声检查可有效实现这一诊断目标。当面临诊断困境时，磁共振成像（MRI）可发挥独特辅助作用，助力实现更安全、精准的诊断。
DOI：10.6084/m9.figshare.24201264