title: Day 3 compared with day 2 cryopreservation does not affect embryo survival but improves the outcome of frozen-thawed embryo transfers.
abstract: A retrospective study was performed to determine the differences in embryo survival and frozen-thawed embryo transfers outcome between cryopreservation performed on day 3 versus day 2. We conclude that freezing supernumerary embryos on day 3 provides similar thawing survival parameters, better implantation, pregnancy, and live-birth rates compared with day 2 cryopreservation.
authors.affiliation: Laboratoire de Biologie de la Reproduction, Service d'Histologie-Embryologie-Cytogénétique, Bondy, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Sifer
authors.forename: Afifa
authors.initials: A
authors.lastname: Sellami
authors.forename: Christophe
authors.initials: C
authors.lastname: Poncelet
authors.forename: Brigitte
authors.initials: B
authors.lastname: Martin-Pont
authors.forename: Raphael
authors.initials: R
authors.lastname: Porcher
authors.forename: Jean-Noel
authors.initials: JN
authors.lastname: Hugues
authors.forename: Jean-Philippe
authors.initials: JP
authors.lastname: Wolf
mesh_terms: D000328:Adult; D015925:Cryopreservation / Q000379:methods*; D004624:Embryo Transfer; D005260:Female; D006801:Humans; D007247:Infertility, Female / Q000628:therapy*; D011247:Pregnancy; D011256:Pregnancy Outcome; D012189:Retrospective Studies; D013048:Specimen Handling / Q000379:methods*; D016896:Treatment Outcome