Oocyte donation: insights into implantation

Maureen Moomjy, Ina N. Cholst, Robin Mangieri, Zev Rosenwaks
In: Fertility and Sterility · 1999 · vol. 71(1) , pp. 15–21 · doi:10.1016/s0015-0282(98)00420-8 · PMID:9935110 · W1978964819
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This paper reviews current understanding and recent advancements regarding implantation in the context of oocyte donation.

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Abstract

ObjectiveTo ascertain whether obstetric, gynecologic, or congenital variables affect implantation efficiency or eventual delivery in donor oocyte recipients.DesignClinical study.SettingAcademic tertiary care infertility clinic.Patient(s)A total of 370 recipients.Intervention(s)Fresh ET following oocyte donation in a hormone replacement cycle.Main outcome measure(s)Regression analyses were performed to detect any statistically significant difference in the pregnancy rate (PR), delivery rate, miscarriage rate, or implantation rate associated with different obstetric, gynecologic, and congenital independent variables while accounting for the age of the recipient in each analysis.Result(s)For all recipients, a clinical PR per transfer of 58.9% was achieved, with an implantation rate of 30%. A significant decline in the implantation rate was noted in relation to increasing age of the recipient. A history of tubal disease was associated with a significantly lower implantation rate and a significantly lower ongoing and delivered PR. Asherman's syndrome, despite surgical correction, appeared to negatively affect the ongoing and delivered PR.Conclusion(s)With the exceptions of recipient age and a history of tubal disease, all other uterine factors studied did not appear to influence the implantation potential of an embryo resulting from oocyte donation. A history of tubal disease had a distinctly negative effect on implantation efficiency and delivery potential for a given recipient. This finding highlights the need to identify the mechanisms underlying the negative effect of tubal disease so that donor oocyte recipients and all other patients with this cause of infertility can benefit from directed therapy.

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