title: [Transvaginal sonographic cervical length and prediction of preterm delivery in twin pregnancies with preterm labor].
abstract: OBJECTIVE
  To assess ultrasonographic cervical length measurement in predicting preterm labor without premature rupture of the membrane in twin pregnancies.
  
  
  METHODS
  Retrospective study of 56 patients with preterm labor between 24+0 and 32+0 weeks. The judgment criteria was probability of delivery before 34 weeks in cases of spontaneous preterm labor before 32 weeks.
  
  
  RESULTS
  The threshold of cervical length less than 20mm and 30mm respectively had a sensitivity of 42% and 94%, a specificity of 51% and 13%, a positive predictive value of 30% and 36% and a negative predictive value of 63% and 83% in predicting delivery before 34 weeks.
  
  
  CONCLUSIONS
  Our results suggest that ultrasonographic measurement of cervical length is not a predictive of preterm delivery in twin pregnancies with preterm labor. However, the high negative predictive value allows to reassure the patient and to avoid hospitalization as well as tocolysis in cases where cervical length is superior or equal to 30mm.
authors: Service de Gynécologie Obstétrique et Médecine de la Reproduction, Université Joseph-fourier Grenoble-1, CHU de Grenoble, BP 217, 38043 Grenoble Cedex 09, France. csauvanaud@chu-grenoble.fr
authors: C
authors: C
authors: Sauvanaud
authors: V
authors: V
authors: Equy
authors: C
authors: C
authors: Faure
authors: B
authors: B
authors: Boussat
authors: P
authors: P
authors: Hoffmann
authors: F
authors: F
authors: Sergent
mesh_terms: D000328:Adult; D054791:Cervical Length Measurement / Q000379:methods*; D036861:Delivery, Obstetric; D005188:False Negative Reactions; D005260:Female; D005865:Gestational Age; D006801:Humans; D007752:Obstetric Labor, Premature / Q000000981:diagnostic imaging* / Q000453:epidemiology / Q000209:etiology; D011237:Predictive Value of Tests; D011247:Pregnancy; D059285:Pregnancy, Twin; D011379:Prognosis; D012189:Retrospective Studies; D012307:Risk Factors; D014621:Vagina / Q000000981:diagnostic imaging*; D055815:Young Adult
keywords: Accouchement prématuré; Grossesse gémellaire; Longueur échographique du col utérin; Menace d’accouchement prématuré; Naissance prématurée; Preterm birth; Preterm delivery; Preterm labor; Transvaginal sonographic cervical length; Twin pregnancy