title: Comparison of early pregnancy and neonatal outcomes after frozen and fresh embryo transfer in ART cycles.
abstract: OBJECTIVE
  frozen embryo transfer (FET) has no clear negative impact on neonatal outcome compared with fresh embryo transfer (ET) and appears to result in similar or even better neonatal outcome. The objective of this study was to compare early pregnancy outcome and neonatal health of children born after FET and fresh ET.
  
  
  METHODS
  in this study early pregnancy and neonatal outcomes after FET (n = 200) and fresh ET (n = 500) were compared.
  
  
  RESULTS
  for early pregnancy, biochemical pregnancy was comparable between FET and fresh ET groups. Spontaneous abortion was significantly higher in FET (14.5%) than fresh ET group (9%). Neonatal outcome was comparable between both groups except for lower live birth rate in FET (55%) versus fresh ET group (66%).
  
  
  CONCLUSIONS
  FET has similar neonatal outcome in terms of prematurity, low birth weight, stillbirth, neonatal death and major malformation compared with fresh ET.
authors.affiliation: Research and Clinical center for Infertility, Department of Obstetrics and Gynecology, Shahid Sadoughi University of Medical Science, Bouali Ave, Safaieh, 8916877391 Yazd, Iran. abbas_aflatoonian@yahoo.com
authors.forename: Abbas
authors.initials: A
authors.lastname: Aflatoonian
authors.forename: Fatemeh
authors.initials: F
authors.lastname: Mansoori Moghaddam
authors.forename: Mehri
authors.initials: M
authors.lastname: Mashayekhy
authors.forename: Farnaz
authors.initials: F
authors.lastname: Mohamadian
mesh_terms: D000328:Adult; D015925:Cryopreservation; D010064:Embryo Implantation; D004624:Embryo Transfer / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007247:Infertility, Female / Q000628:therapy*; D050498:Live Birth; D008297:Male; D011247:Pregnancy; D018873:Pregnancy Rate; D011795:Surveys and Questionnaires; D016896:Treatment Outcome