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  • Title: Intracytoplasmic sperm injection increased fertilization and good-quality embryo formation in patients with non-male factor indications for in vitro fertilization: a prospective randomized study.
    Author: Khamsi F, Yavas Y, Roberge S, Wong JC, Lacanna IC, Endman M.
    Journal: Fertil Steril; 2001 Feb; 75(2):342-7. PubMed ID: 11172837.
    Abstract:
    OBJECTIVE: To compare the fertilization rate and formation of good-quality embryos with conventional IVF and ICSI in patients with non-male factor infertility. DESIGN: Prospective controlled study. SETTING: Infertility clinic. PATIENT(S): Thirty-five patients with non-male factor infertility. INTERVENTION(S): Retrieved sibling oocytes were randomly assigned to conventional IVF or ICSI. Of sibling oocytes assigned to ICSI, only metaphase II oocytes were injected with sperm. MAIN OUTCOME MEASURE(S): Fertilization rate and formation of good-quality embryos per retrieved oocyte. RESULT(S): Per retrieved oocyte, ICSI resulted in better fertilization rate compared with conventional IVF (71.3% [134 of 188] vs. 57.2% [107 of 187]). Per retrieved oocyte, ICSI also resulted in better formation of good-quality embryos at 48 hours after retrieval compared with conventional IVF (64.4% [121 of 188] vs. 47.1% [88 of 187]). CONCLUSION(S): In IVF patients with non-male factor infertility, subjecting some sibling oocytes to ICSI increased the fertilization rate and formation of good-quality embryos per retrieved oocyte. It also avoided the problem of total fertilization failure in almost all cases.
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