Day 3 compared with day 2 cryopreservation does not affect embryo survival but improves the outcome of frozen-thawed embryo transfers.
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.
Sifer
Christophe
C
Laboratoire de Biologie de la Reproduction, Service d'Histologie-Embryologie-Cytogénétique, Bondy, France.
Sellami
Afifa
A
Poncelet
Christophe
C
Martin-Pont
Brigitte
B
Porcher
Raphael
R
Hugues
Jean-Noel
JN
Wolf
Jean-Philippe
JP
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