TY - CHAP M1 - Book, Section TI - Ferning Pattern for Amniotic Fluid A1 - Pfennig, Camiron L. A1 - Brown, B. Ethan A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason Y1 - 2021 N1 - T2 - The Atlas of Emergency Medicine, 5e AB - To distinguish between amniotic fluid due to membrane rupture and normal vaginal secretions in patients beyond the 20th week of pregnancy who present with spontaneous vaginal fluid passage. Characteristic arborization, or typical ferning pattern, confirms amniotic fluid and spontaneous membrane rupture. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/03/28 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181052961 ER -