Many factors can increase the risk of placenta accreta, including:
March 28, 2015
- Previous uterine surgery. If you've had a C-section or other uterine surgery, you're at increased risk of placenta accreta. The risk of placenta accreta increases with the number of uterine surgeries.
- Placenta position. If your placenta partially or totally covers your cervix (placenta previa) or sits in the lower portion of your uterus, you're at increased risk of placenta accreta.
- Maternal age. Placenta accreta is more common in women older than 35.
- Previous childbirth. The risk of placenta accreta increases each time you give birth.
- Uterine conditions. The risk of placenta accreta is higher if you have abnormalities or scarring in the tissue that lines your uterus (endometrium). Noncancerous uterine growths that bulge into the uterine cavity (submucosal uterine fibroids) also increase the risk.
- Wortman AC, et al. Placenta accreta, increta, and percreta. Obstetrics and Gynecology Clinics of North America. 2013;40:137.
- Creasy RK, et al. Placenta previa, placenta accreta, abruptio placentae, and vasa previa. In: Creasy and Resnik's Maternal-Fetal Medicine: Principles and Practice. 7th ed. Philadelphia, Pa.: Saunders Elsevier; 2014. http://www.clinicalkey.com. Accessed Feb. 3, 2015.
- Cunningham FG, et al. Placental abnormalities. In: Williams Obstetrics. 24th ed. New York, N.Y.: The McGraw-Hill Companies; 2014. http://www.accessmedicine.com. Accessed Feb. 3, 2015.
- Resnik R. Clinical features and diagnosis of placenta accreta, increta, and percreta. http://www.uptodate.com/home. Accessed Feb. 4, 2015.
- Eshkoli T, et al. Placenta accreta: Risk factors, perinatal outcomes, and consequences for subsequent births. American Journal of Obstetrics and Gynecology. 2013;208:219e1.
- Resnik R. Management of placenta accreta, increta, and percreta. http://www.uptodate.com/home. Accessed Feb. 4, 2015.
- Legendre G, et al. Conservative management of placenta accreta: Hysteroscopic resection of retained tissues. The Journal of Minimally Invasive Gynecology. 2014;21:910.
- Relaxation techniques for health: An introduction. National Center for Complementary and Integrative Health. https://nccih.nih.gov/health/stress/relaxation.htm. Accessed Feb. 5, 2015.
- Wick MJ (expert opinion). Mayo Clinic, Rochester, Minn. Feb. 19, 2015.