OBSTETRICS: PRECONCEPTION AND PRENATAL CAREThe FL/AC Ratio for Prediction of Shoulder Dystocia in Women With Gestational DiabetesDuryea, Elaine L.; Casey, Brian M.; McIntire, Donald D.; Twickler, Diane M.Author Information Departments of Obstetrics and Gynecology (E.L.D., B.M.C., D.D.M.) and Radiology (D.M.T.), The University of Texas Southwestern Medical Center, Dallas, TX Topics: Age-adjusted AC, FL/AC ratio, gestational diabetes mellitus, HC/AC ratio, neonatal brachial plexus palsy, shoulder dystocia, sonographic predictors, vaginal delivery. Obstetrical & Gynecological Survey: March 2018 - Volume 73 - Issue 3 - p 129-130 doi: 10.1097/OGX.0000000000000542 Buy Metrics Abstract (Abstracted from J Matern Fetal Neonatal Med 2017;30(19):2378–2381) Shoulder dystocia in vaginal deliveries can result in neonatal brachial plexus palsy (NBPP), requiring multiple surgical interventions and resulting in severe long-term disability. Sonographic predictors of shoulder dystocia are of particular interest in women with gestational diabetes mellitus (GDM) as GDM increases the risk of shoulder dystocia. Copyright © 2018 Wolters Kluwer Health, Inc. All rights reserved.