[Impact of the external cephalic version on the obstetrical prognosis in a team with a high success rate of vaginal delivery in breech presentation]. / Impact de la version par manœuvre externe sur le pronostic obstétrical dans une équipe à fort taux de réussite de l'accouchement vaginal du siège.

OBJECTIVES: To analyse the impact of external cephalic version (ECV) on caesarean section rate in a team with a high success rate of vaginal delivery in breech presentation. MATERIALS AND METHODS: Retrospective monocentric study including 298 patients with a breech presentations between 33 and 35weeks of amenorrhea followed at our university hospital and delivered after 35weeks, between 1st January 2011 and 31st December 2013. Patients were divided into 2 groups: planned ECV (n=216 patients) versus no planned ECV (n=57 patients). RESULTS: Our rate of successful vaginal breech delivery over the period of the study was 61.1%. We performed 165 ECV, with a 21.8% success rate. The average term of the attempt of ECV was 36.7weeks of amenorrhea. The caesarean section rate was not significantly different in the planned ECV group, even after adjustment on age, parity and previous caesarean delivery (adjusted OR=1.67 [0.77-3.61]). Attempt of ECV did not reduce the number of breech presentation at delivery (61.1% versus 61.4% [P=0.55]). CONCLUSION: Planned ECV in our center with a high level of breech vaginal delivery did not significantly impact our cesarean section rate.