title: Birth weight is associated with inner cell mass grade of blastocysts.
abstract: OBJECTIVE
  To determine the relationship between blastocyst growth parameters and birth weight.
  
  
  METHODS
  Cohort study.
  
  
  METHODS
  University-affiliated fertility center.
  
  
  METHODS
  In vitro patients who delivered a singleton after a single-blastocyst transfer.
  
  
  METHODS
  None.
  
  
  METHODS
  Birth weight adjusted for gestational age at delivery and gender, with adjusted birth weight examined for association with blastocyst scores and grades.
  
  
  RESULTS
  After standard in vitro fertilization (IVF) and thawed embryo transfers, greater birth weight was associated with a higher inner cell mass grade. The grade of the trophectoderm and stage of the blastocyst did not relate to weight.
  
  
  CONCLUSIONS
  Embryonic growth as early as day 5 can predict the progress of fetal development as measured by birth weight.
authors.affiliation: New York University Fertility Center, New York University Langone Medical Center, New York, New York. Electronic address: fredivf@yahoo.com.
authors.forename: Frederick
authors.initials: F
authors.lastname: Licciardi
authors.affiliation: New York University Fertility Center, New York University Langone Medical Center, New York, New York.
authors.forename: Caroline
authors.initials: C
authors.lastname: McCaffrey
authors.affiliation: New York University Fertility Center, New York University Langone Medical Center, New York, New York.
authors.forename: Cheongeun
authors.initials: C
authors.lastname: Oh
authors.affiliation: Offices for Fertility and Reproductive Medicine, New York, New York.
authors.forename: Cecilia
authors.initials: C
authors.lastname: Schmidt-Sarosi
authors.affiliation: New York University Fertility Center, New York University Langone Medical Center, New York, New York.
authors.forename: David H
authors.initials: DH
authors.lastname: McCulloh
mesh_terms: D001724:Birth Weight / Q000502:physiology*; D001755:Blastocyst / Q000502:physiology*; D053624:Blastocyst Inner Cell Mass / Q000502:physiology*; D046149:Embryo Culture Techniques / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D012189:Retrospective Studies
keywords: Birth weight; blastocyst grades; in vitro fertilization