title: Cervical Length Screening in Asymptomatic Women at High Risk and Low Risk for Spontaneous Preterm Birth.
abstract: Cervical length (CL) screening should be offered to singletons because there are interventions for those with a short CL. A transvaginal ultrasound (TVU) is the "gold standard" for CL. In singletons with prior spontaneous preterm birth, serial TVU CL screening is recommended between 16 and 23 6/7 weeks. Universal TVU CL screening between 18 and 24 weeks may be considered for low-risk singletons with the administration of vaginal progesterone for TVU CL≤20 mm; alternatively, transabdominal ultrasound CL screening may be considered with reflux to TVU CL screening for a transabdominal ultrasound CL<35 mm or inadequate visualization. CL screening is not recommended in multiples.
authors.affiliation: *Department of Obstetrics & Gynecology, Virginia Hospital Center, Division of Maternal Fetal Medicine, Arlington, Virginia †Department of Obstetrics & Gynecology, Division of Maternal Fetal Medicine, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania.
authors.forename: Kelly M
authors.initials: KM
authors.lastname: Orzechowski
authors.forename: Rupsa C
authors.initials: RC
authors.lastname: Boelig
authors.forename: Vincenzo
authors.initials: V
authors.lastname: Berghella
mesh_terms: D058070:Asymptomatic Diseases; D054791:Cervical Length Measurement / Q000379:methods*; D005260:Female; D005865:Gestational Age; D006801:Humans; D008403:Mass Screening; D011247:Pregnancy; D018566:Pregnancy, High-Risk; D047928:Premature Birth / Q000209:etiology* / Q000517:prevention & control; D055502:Secondary Prevention; D002581:Uterine Cervical Incompetence / Q000000981:diagnostic imaging*