title: Pregnancy outcome after age 50.
abstract: OBJECTIVE
  To evaluate pregnancy complications occurring after age 50.
  
  
  METHODS
  We compared the pregnancy outcomes of women aged 50-64 years with those aged 45-49 years and with the general population.
  
  
  RESULTS
  During 5 years from January 1, 1999, to June 30, 2004, 123 women aged 45 years and older gave birth. Fifty-five percent were nulliparous, 24 of 123 were aged 50-64 years, and 99 of 123 women were aged 45-49 years. All women older than age 50 conceived via in vitro fertilization with oocyte donation. For these 123 women, the overall mean gestational age at delivery was 37.6+/-2.6 weeks. The mean birth weight was 2,684+/-754 g, significantly lower than the general population, and the incidences of multifetal pregnancies, diabetes, and hypertension were high. Women aged 50 years and older were more likely to be hospitalized during pregnancy than women younger than 50 years (63% versus 22%, P<.001). Neonatal outcome was generally good. Women aged 50 years and older gave birth to significantly more low birth weight babies than those younger than age 50 years (61% versus 32%, P=.002). Gestational age and birth weight were both significantly lower for singletons and multiples in women older than age 50 years compared with those younger than age 50 years (gestational age of singletons 36.9 versus 38.4 weeks, P=.005; birth weight of singletons 2,694 versus 3,027 g, P=.019; gestational age of multiples 35.1 versus 36.4 weeks, P=.01; birth weight of multiples 1,976 versus 2,310 g, P=.038, respectively).
  
  
  CONCLUSIONS
  Pregnant women aged 50-64 years have increased risks of preterm birth, low birth weight babies, diabetes mellitus, hypertension, and hospitalization.
  
  
  METHODS
  II-2.
authors.affiliation: Department of Obstetrics and Gynecology, Sheba Medical Center, Tel Hashomer, Israel. michal.simchen@sheba.health.gov.il
authors.forename: Michal J
authors.initials: MJ
authors.lastname: Simchen
authors.forename: Yoav
authors.initials: Y
authors.lastname: Yinon
authors.forename: Orit
authors.initials: O
authors.lastname: Moran
authors.forename: Eyal
authors.initials: E
authors.lastname: Schiff
authors.forename: Eyal
authors.initials: E
authors.lastname: Sivan
mesh_terms: D000367:Age Factors; D001724:Birth Weight; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007236:Infant, Small for Gestational Age; D008423:Maternal Age; D008875:Middle Aged; D011247:Pregnancy; D011248:Pregnancy Complications / Q000453:epidemiology; D011256:Pregnancy Outcome / Q000453:epidemiology*; D011272:Pregnancy, Multiple