P45 Results from cycles with fresh and vitrified oocytes in the Preimplantation Genetic Screening program

Vitrified/warmed single blastocyst transfer in preimplantation genetic diagnosis/preimplantation genetic screening cycles.

OBJECTIVE To investigate the single blastocyst transfer in preimplantation genetic diagnosis (PGD)/preimplantation genetic screening (PGS) cycles. METHODS 80 PGD/PGS cycles undergoing blastocyst biopsy were studied. There were 88 warming cycles during the study period. Only one warmed blastocyst was transferred per cycle. The outcomes were followed up to the infants were born. RESULTS The e...

In vitro fertilization with preimplantation genetic screening.

BACKGROUND Pregnancy rates in women of advanced maternal age undergoing in vitro fertilization (IVF) are disappointingly low. It has been suggested that the use of preimplantation genetic screening of cleavage-stage embryos for aneuploidies may improve the effectiveness of IVF in these women. METHODS We conducted a multicenter, randomized, double-blind, controlled trial comparing three cycles...

Effect of vitrification procedure on chromosomal status of embryos achieved from vitrified and fresh oocytes

background: In order to assess the chromosomal status in embryos obtained from vitrified and fresh donated oocytes, preimplantational genetic diagnostic (PGD) was performed after biopsy of one blastomere at day 3. METHODS: A total of 249 oocytes were obtained from 23 oocyte donors, 80 oocytes were used in the vitrified group and 151 oocytes were used in the fresh group. Nine chromosomes (13, 15...

In Vitro Fertilization with Preimplantation Genetic Screening

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Preimplantation genetic screening.