title: [Perinatal outcome of monochorionic and dichorionic twin gestations: a study of 775 pregnancies at Reunion Island].
abstract: OBJECTIVE
  To compare the perinatal mortality and morbidity of infants born from monochorionic versus dichorionic twin pregnancies (TP).
  
  
  METHODS
  Retrospective, comparative study of monochorionic and dichorionic TP over 10 years in the south of Reunion Island. Information regarding demographic, gestational and perinatal variables of mothers and infants was collected from the hospital perinatal database.
  
  
  RESULTS
  Six hundred and twenty dichorionic and 155 monochorionic TP were analyzed. In case of monochorionic TP, mothers had higher rates of pregnancy-related hypertension (OR=1.82, 95%CI=[1.02-3.29] ; P=0.03) and hospitalization (OR=1.48, 95%CI=[1.02-2.16]; P=0.03). Newborns from monochorionic TP had higher morbidity for : very preterm birth (birth before 33 weeks gestation) (OR=1.65, 95%CI=[1.02-2.66]; P=0.02), very low birth weight (birth weight<1500g) (OR=1.73, 95%CI=[1.57-3.13]; P<0.001), Apgar<7 at 1 minute (OR=1.76, 95%CI=[1.18-2.61]; P<0.01) and hospitalization (OR=2.08, 95%CI=[1.58-2.73]; P<0.001). Perinatal mortality was also significantly higher (OR=2.47, 95%CI=[1.54-3.94]; P<0.001), as well intrauterine fetal death (OR=3.96, 95%CI=[1.95-8.05]; P<0.001) CONCLUSION: This study confirms that few differences exist among dichorionic and monochorionic TP with regard to maternal morbidity, while neonatal morbidity and mortality are higher in twins born from monochorionic pregnancies.
authors.affiliation: Service de gynécologie-obstétrique, centre hospitalier universitaire de La Réunion, site Sud, BP 350, 97410 Saint-Pierre, Réunion.
authors.forename: A-S
authors.initials: AS
authors.lastname: Oger
authors.forename: P-Y
authors.initials: PY
authors.lastname: Robillard
authors.forename: G
authors.initials: G
authors.lastname: Barau
authors.forename: H
authors.initials: H
authors.lastname: Randrianaivo
authors.forename: F
authors.initials: F
authors.lastname: Bonsante
authors.forename: S
authors.initials: S
authors.lastname: Iacobelli
authors.forename: M
authors.initials: M
authors.lastname: Boukerrou
mesh_terms: D000293:Adolescent; D000328:Adult; D001724:Birth Weight; D002823:Chorion; D004200:Diseases in Twins / Q000453:epidemiology; D005260:Female; D005313:Fetal Death / Q000453:epidemiology; D005865:Gestational Age; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D046110:Hypertension, Pregnancy-Induced / Q000453:epidemiology; D007231:Infant, Newborn; D054238:Perinatal Mortality; D011247:Pregnancy; D011256:Pregnancy Outcome; D059285:Pregnancy, Twin; D047928:Premature Birth / Q000453:epidemiology; D012189:Retrospective Studies; D017508:Reunion / Q000453:epidemiology; D055815:Young Adult
keywords: Dichorionic twin pregnancy; Grossesse gémellaire bichoriale; Grossesse gémellaire monochoriale; Monochorionic twin pregnancy; Morbidité; Mortality; Mortalité; Perinatal morbidity