THE IMPACT OF DURATION OF OOCYTE CRYOPRESERVATION ON LIVE BIRTH OUTCOMES IN IVF CYCLES USING AUTOLOGOUS THAWED OOCYTES

To evaluate whether duration of autologous oocyte vitrification has an impact on in-vitro fertilization (IVF) cumulative live birth rates (cLBR) after fresh or frozen embryo transfers. We identified IVF cycles using vitrified/thawed oocytes from 2010-2020. Ovarian stimulation, vitrification/thawing, IVF/ICSI, culture/transfer were performed published protocols. Duration cryopreservation for the in each thaw cycle was calculated. Primary outcomes per and transfer as well LBR cycle. Statistical analysis between groups chi-square ANOVA categorical continuous variables, respectively. GEE models used to control age at retrieval, number thawed/thaw cycle, indication freezing, BMI, infertility diagnosis, stage ET (for transfers only) embryos transferred. Outcomes 530 utilizing evaluated. Data pooled into listed table below. Adjusted demonstrated that had no rate (LBR) LBR. Though superiority over slow freezing techniques, limited data exists regarding impacts rates. After controlling potential confounding factors, prior subsequent treatments.