Abstract
Objective: Our objective was to analyze the outcome of cryopreserved embryos obtained after intracytoplasmic sperm injection (ICSI) and in vitro fertilization (IVF) in terms of survival rate, implantation rate (IR), total and clinical pregnancy rate (PR) in a retrospective, comparative study.
Methods: Three hundred seventy-five IVF and 463 ICSI surnumerary cleaved embryos, frozen on Day 2 with 1,2-propanediol, were thawed.
Results: Thirty-two percent of the thawed IVF embryos survived and 11 pregnancies (8 clinical) were obtained from 68 transfers (16.1%). Fourty-seven percent of the ICSI embryos survived, with 19 pregnancies (18 clinical) from 116 transfers (16.4%). The IR was 8.5% (8/94) in IVF cycles and 10.8% (20/185) in ICSI cycles.
Conclusions: A significantly better survival rate of ICSI embryos was observed but with no difference in PR, preclinical, and clinical abortion rate, or IR.
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Emiliani, S., Van Den Bergh, M., Vannin, AS. et al. The Outcome of Cryopreserved Human Embryos After Intracytoplasmic Sperm Injection and Traditional IVF. J Assist Reprod Genet 16, 405–409 (1999). https://doi.org/10.1023/A:1020561307110
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DOI: https://doi.org/10.1023/A:1020561307110