RT Book, Section A1 Ludwig, Rebecca A1 Huls, C. Kevin A2 Foley, Michael R. A2 Strong, Jr, Thomas H. A2 Garite, Thomas J. SR Print(0) ID 1152538529 T1 Abnormal Placentation T2 Obstetric Intensive Care Manual, 5e YR 1 FD 1 PB McGraw-Hill Education PP New York, NY SN 9781259861758 LK obgyn.mhmedical.com/content.aspx?aid=1152538529 RD 2024/03/28 AB Placenta accreta is a potentially life threatening condition that continues to challenge the medical field. The prevalence has been on a steady rise over the last few decades, currently between 1 in 533 to 1 in 731 of all deliveries,1 becoming a commonality in obstetrics. Placenta accreta is defined by an abnormal attachment between the placenta and the myometrium of the uterus. The extent of invasiveness is categorized into three different categories: accreta, increta, and percreta. Chorionic villous attachment beyond the normal boundary of Nitabuch layer with superficial attachment of the myometrium is an accreta, villous invasion into the myometrium is increta, and villous invasion up to and beyond the uterine serosa is a percreta. Most morbidities present during the delivery stage and include complications such as uterine atony or postpartum hemorrhage, which can lead to disseminated intravascular coagulopathy, renal failure, or require hysterectomy. Mortality rates increase directly with the degree of invasion and can reach a level as high as 7%.1