title: Prognosis for clinical pregnancy and birth after transferring embryos derived from a cohort of incompletely mature oocytes at retrieval time.
abstract: The purpose of this retrospective study was to establish a prognosis for implantation, pregnancy and live birth rates in stimulated IVF cycles after transferring embryos derived from: 1/ retrieved immature oocytes that matured overnight in vitro (late mature group: LM); 2/ retrieved immature oocytes that matured overnight in vitro and were added to the embryos derived from retrieved mature oocytes (mixed embryos group: MX); and 3/ retrieved mature oocytes (mature group: M). The obtained implantation, clinical pregnancy and live birth rates for the LM group were: 5.6%, 11.4%, 11.4%; for the MX group were: 4.2%, 14.6%, 11.6%; and for the M group were: 14.6%, 45.2% and 33.3%, respectively. These measurements were significantly lower p<0.05 for the LM and MX groups in comparison to the M group. The number of oocytes retrieved and the number of embryos transferred were the lowest (p<0.001-0.05) for the LM group. It is concluded, that the retrieved immature oocytes are able to mature during overnight culture in vitro, be fertilized and provide developmentally competent embryos with the prognosis of 11% for the successful delivery.
authors: 10-243 Olsztyn, Institute of Animal Reproduction and Food Science of Polish Academy of Science, Poland. twiesak@aol.com
authors: Teresa
authors: T
authors: Wiesak
authors: Anna T
authors: AT
authors: Grazul-Bilska
authors: Maria
authors: M
authors: Wikarczuk
authors: Jay S
authors: JS
authors: Schinfeld
authors: Larry I
authors: LI
authors: Barmat
authors: Annette
authors: A
authors: Lee
authors: Stephen G
authors: SG
authors: Somkuti
mesh_terms: D000704:Analysis of Variance; D004624:Embryo Transfer / Q000379:methods*; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D006801:Humans; D054315:Oocyte Retrieval / Q000379:methods*; D009865:Oocytes / Q000254:growth & development*; D011247:Pregnancy; D011256:Pregnancy Outcome / Q000453:epidemiology*; D011379:Prognosis; D012189:Retrospective Studies