TY - CHAP M1 - Book, Section TI - Ectopic Pregnancy A1 - Cunningham, F. Gary A1 - Leveno, Kenneth J. A1 - Dashe, Jodi S. A1 - Hoffman, Barbara L. A1 - Spong, Catherine Y. A1 - Casey, Brian M. PY - 2022 T2 - Williams Obstetrics, 26e AB - Following fertilization and fallopian tube transit, the blastocyst normally implants in the endometrial lining of the uterine cavity. Implantation elsewhere is considered ectopic. In the United States, numbers from an insurance database and from Medicaid claims showed ectopic pregnancy rates of 1.54 percent and 1.38 percent, respectively, in 2013 (Tao, 2017). Ectopic implantation accounts for 3 percent of all pregnancy-related deaths (Creanga, 2017). Fortunately, beta-human chorionic gonadotropin (β-hCG) assays and transvaginal sonography (TVS) aid earlier diagnosis, maternal survival, and fertility conservation. SN - PB - McGraw Hill CY - New York, NY Y2 - 2024/03/28 UR - accessmedicine.mhmedical.com/content.aspx?aid=1190750800 ER -