TY - CHAP M1 - Book, Section TI - Trauma in Pregnancy A1 - Beldowicz, Brian C. A1 - Leshikar, David A1 - Cocanour, Christine S. A2 - Feliciano, David V. A2 - Mattox, Kenneth L. A2 - Moore, Ernest E. PY - 2020 T2 - Trauma, 9e AB - KEY POINTSMotor vehicle crashes account for 50% of trauma injuries during pregnancy and 82% of trauma-related fetal deaths, many of which are related to improper seat belt use.The disproportionate increase in plasma volume compared to red blood cell volume during pregnancy allows 35% of maternal blood to be lost before the mother exhibits clinical signs of shock.When supine, the gravid uterus compresses the inferior vena cava and causes a decrease in venous return to the heart and a drop in cardiac output. Placing the mother in the left lateral decubitus position restores venous flow and improves cardiac output.Imaging in the pregnant patient should be similar to the nonpregnant patient if life-threatening injuries are suspected.Pelvic fractures are the most common maternal injury that results in fetal death.Consider emergency cesarean delivery within 5 minutes in women who are beyond 20 weeks and have cardiopulmonary collapse because the gravid uterus may interfere with maternal hemodynamics.Intimate partner violence is the most common form of intentional trauma in pregnancy. SN - PB - McGraw Hill CY - New York, NY Y2 - 2024/03/28 UR - accesssurgery.mhmedical.com/content.aspx?aid=1175139232 ER -