title: [Clinical and sonographic diagnosis of occiput posterior position: a prospective study of 350 deliveries].
abstract: OBJECTIVE
  To evaluate clinical reliability compared to intrapartum ultrasound as a tool to diagnose occiput posterior position and to investigate the proportion of rotations occurring during labour.
  
  
  METHODS
  350 women in labor with a singleton fetus in a vertex position were prospectively studied using ultrasound and obstetrical examination. Outcome of labor was also monitored.
  
  
  RESULTS
  Reliability of clinical examination is 85,7%, initial occiput posterior position represented 40,2% and most rotated in an anterior position (84, 8%) while only 0,6% of initial anterior positions delivered in occiput posterior position. Logistic regression did not allow to find significant predictor of occiput posterior position rotation.
  
  
  CONCLUSIONS
  Clinical examination is relatively reliable for posterior position diagnosis and in most cases, initially occipitoposterior positions rotate anteriorly.
authors.affiliation: Service de gynécologie--obstétrique, CHU de Farhat-Hached, Sousse, Tunisie. hidar.samir@gnet.tn
authors.forename: S
authors.initials: S
authors.lastname: Hidar
authors.forename: A
authors.initials: A
authors.lastname: Choukou
authors.forename: M
authors.initials: M
authors.lastname: Jerbi
authors.forename: A
authors.initials: A
authors.lastname: Chaïeb
authors.forename: M
authors.initials: M
authors.lastname: Bibi
authors.forename: H
authors.initials: H
authors.lastname: Khaïri
mesh_terms: D000328:Adult; D036861:Delivery, Obstetric; D005260:Female; D005324:Fetal Movement; D006801:Humans; D007746:Labor Presentation; D007743:Labor, Obstetric; D016015:Logistic Models; D008137:Longitudinal Studies; D011247:Pregnancy; D011446:Prospective Studies; D016216:Ultrasonography, Prenatal; D014710:Version, Fetal