Frozen-thawed embryo transfer and live birth: Long-term follow-up after one oocyte retrieval.
Frozen-thawed embryos accounted for 39% (249 of 639) of live births from 931 consecutive first oocyte retrievals after median follow-up of 6.5 years with consistent use of pronuclear-stage freezing and cleavage-stage transfer. Survival after thaw was 95% (2,129 of 2,247). Implantation and live birth rates per individual frozen-thawed embryo transfered were 22% (431 of 1,937) and 18% (346 of 1,937), respectively.
Tummon
Ian S
IS
Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Mayo Clinic, Rochester, Minnesota, USA. itummon@yahoo.com
Wentworth
Mark A
MA
Thornhill
Alan R
AR
D000328:Adult; D015925:Cryopreservation / Q000706:statistics & numerical data*; D004624:Embryo Transfer / Q000706:statistics & numerical data*; D004622:Embryo, Mammalian / Q000473:pathology*; D005260:Female; D005500:Follow-Up Studies; D006358:Hot Temperature; D006801:Humans; D015994:Incidence; D007246:Infertility / Q000453:epidemiology* / Q000473:pathology / Q000628:therapy*; D050498:Live Birth / Q000453:epidemiology*; D008297:Male; D008910:Minnesota / Q000453:epidemiology; D009865:Oocytes / Q000473:pathology* / Q000637:transplantation; D011247:Pregnancy; D018873:Pregnancy Rate; D012189:Retrospective Studies; D016896:Treatment Outcome