RT Book, Section A1 Adhikari, Srikar A1 Zeger, Wesley A1 Stolz, Lori A2 Reichman, Eric F. SR Print(0) ID 1159806193 T1 Ultrasound in Early Pregnancy T2 Reichman's Emergency Medicine Procedures, 3e YR 2018 FD 2018 PB McGraw-Hill Education PP New York, NY SN 9781259861925 LK accessemergencymedicine.mhmedical.com/content.aspx?aid=1159806193 RD 2024/09/16 AB Abdominal pain and vaginal bleeding are common complaints of patients presenting to the Emergency Department (ED) in the first 20 weeks of pregnancy. Ectopic pregnancy is the most common life-threatening emergency during the first trimester of pregnancy. The current incidence of ectopic pregnancy is difficult to estimate from existing data.1-3 The overall incidence of ectopic pregnancy has increased during the mid-twentieth century due to increased occurrence of pelvic inflammatory disease.1-3 History and physical examination have proven to be unreliable in excluding the presence of an ectopic pregnancy. Pelvic ultrasound (US) is the diagnostic test of choice in the initial evaluation of these patients with possible ectopic pregnancy.