title: [Embryo reduction in multiple pregnancies. A French multicenter study].
abstract: OBJECTIVE
  To study the outcome of multifetal pregnancy embryo reductions (MFPR) in France.
  
  
  METHODS
  A retrospective questionnaire multicenter survey was conducted in 11 French centers. 262 consecutive MFPR were collected. Miscarriage and prematurity rates were analyzed as a function of the starting number of embryos, the finishing number after MFPR, and the technique of MFPR.
  
  
  RESULTS
  There were 41 pregnancy losses before 24 weeks (16%), and 221 deliveries at 25 menstrual weeks or later (84%). Prematurity was significantly correlated to the finishing number of embryos following MFPR. However, even when a single embryo was left, there were 30% of premature deliveries.
  
  
  CONCLUSIONS
  MFPR decreases the risk of prematurity in multifetal pregnancies of high order, and this is best achieved when a single embryo is left.
authors.affiliation: Centre Hospitalo-Universitaire de Montpellier.
authors.forename: M
authors.initials: M
authors.lastname: Dommergues
authors.forename: J
authors.initials: J
authors.lastname: Aknin
authors.forename: P
authors.initials: P
authors.lastname: Boulot
authors.forename: I
authors.initials: I
authors.lastname: Nisand
authors.forename: F
authors.initials: F
authors.lastname: Lewin
authors.forename: J F
authors.initials: JF
authors.lastname: Oury
authors.forename: M
authors.initials: M
authors.lastname: Herlicoviez
authors.forename: Y
authors.initials: Y
authors.lastname: Dumez
authors.forename: M I
authors.initials: MI
authors.lastname: Evans
mesh_terms: D000028:Abortion, Induced / Q000379:methods; D000022:Abortion, Spontaneous / Q000209:etiology; D004622:Embryo, Mammalian; D005260:Female; D005602:France; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D011247:Pregnancy; D011256:Pregnancy Outcome; D011272:Pregnancy, Multiple; D012189:Retrospective Studies; D012307:Risk Factors; D014310:Triplets; D014427:Twins
vernacular_title: Réduction embryonnaire dans les grossesses multiples. Une enquête multicentrique française. Pour le Club Francophone de Médecine Foetale.