TY - CHAP M1 - Book, Section TI - Maternal Early Warning System A1 - Hess, Philip E. A2 - Hess, Philip E. A2 - Li, Yunping A2 - Kowalczyk, John J. A2 - Stiles, Justin K. Y1 - 2023 N1 - T2 - Obstetric Anesthesia: Quick References & Practical Guides AB - The rate of maternal mortality has been increasing in the United States. The maternal mortality rate for 2020 was 23.8/100,000 live births compared with a rate of 17.4 in 2018.1 SN - PB - McGraw Hill CY - New York, NY Y2 - 2024/10/12 UR - obgyn.mhmedical.com/content.aspx?aid=1199673366 ER -