title: Application of two different synthetic sequential media for the human IVF-ET program: a prospective, randomized, and comparative study.
abstract: OBJECTIVE
  Since IVF program was first established, various types of media and culture systems have been developed either in-house or commercially. The aim of this study was to compare the efficacy of in-house Maria Research Center (MRC) media to that of commercially available Sydney IVF media in human day 3 embryo transfer cycles.
  
  
  METHODS
  Three hundred sixty nine couples were included in this prospective, randomized, and comparative study. All couples undergoing IVF treatment at the Maria Fertility Hospital were randomly assigned to either Sydney IVF (n=178) or MRC (n=191) media.
  
  
  RESULTS
  No difference was observed between the MRC media and Sydney IVF media groups with respect to fertilization rate (74.4% vs. 75.5%). The clinical pregnancy and implantation rates of MRC media (47.1% and 20.0%, respectively) were also similar to those of Sydney IVF media (44.4% and 19.4%, respectively). However, the proportion of embryos with good quality on day 3 was significantly higher in the MRC media group than the Sydney IVF media group (50.2% vs. 43.2%) (p<0.05).
  
  
  CONCLUSIONS
  MRC media were as effective as Sydney IVF media for sustaining embryo development and pregnancy rates. The present study implies that MRC media can be a suitable alternative to commercially available media for human IVF-ET program.
authors.affiliation: Maria Research Center, Seoul, Korea.
authors.forename: Jeong
authors.initials: J
authors.lastname: Yoon
authors.forename: Hye-Jin
authors.initials: HJ
authors.lastname: Yoon
authors.forename: Kyoung-Mi
authors.initials: KM
authors.lastname: Juhn
authors.forename: Jin-Kyung
authors.initials: JK
authors.lastname: Ko
authors.forename: San-Hyun
authors.initials: SH
authors.lastname: Yoon
authors.forename: Yong
authors.initials: Y
authors.lastname: Ko
authors.forename: Jin-Ho
authors.initials: JH
authors.lastname: Lim