title: [Fetal and neonatal complications related to prolonged pregnancy].
abstract: OBJECTIVE
  To evaluate fetal and neonatal outcomes related to prolonged pregnancy.
  
  
  METHODS
  This study is based on Pubmed search, Cochrane library and HAS recommendations.
  
  
  RESULTS
  The risk of fetal complications including macrosomia (6 %), oligohydramnios (10 %-15 %), abnormal fetal heart rate pattern and meconium-stained fluid is increased in prolonged pregnancy (≥ 41(+0) weeks). The rate of stillbirth was estimated between 1.6 ‰ and 3.0 ‰ live births according to countries in post-term pregnancies (≥ 42(+0) weeks). The risk of umbilical cord pH less than 7.10, Apgar score at five minutes inferior to 7, ICU admissions and perinatal asphyxia is increased in post-term infants (≥ 42(+0) weeks) compared with term infants. The risk of neurologic complications including neonatal convulsion, hypoxic ischemic encephalopathy, cerebral palsy, developmental deviations and epilepsy in childhood is increased in post-term infants. The risk of meconium aspiration syndrome, neonatal sepsis, and birth trauma including shoulder dystocia and bone fracture is increased in post-term infants. The rate of perinatal mortality increases in post-term infants. The perinatal mortality in post-term infants could be explained by perinatal asphyxia and meconium aspiration syndrome.
  
  
  CONCLUSIONS
  The risk of perinatal complications and mortality are increased in prolonged pregnancy.
authors: Inserm, UMR 953, recherche épidémiologique en santé périnatale, santé des femmes et des enfants, 75020 Paris, France.
authors: A A
authors: AA
authors: Chantry
authors: E
authors: E
authors: Lopez
mesh_terms: D005260:Female; D005315:Fetal Diseases / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality; D005602:France / Q000453:epidemiology; D005843:Geography; D006801:Humans; D007231:Infant, Newborn; D007232:Infant, Newborn, Diseases / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality; D009017:Morbidity; D007744:Obstetric Labor Complications / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality; D011273:Pregnancy, Prolonged / Q000453:epidemiology* / Q000209:etiology / Q000401:mortality