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  • Title: Efficiency of changing the embryo transfer time from day 3 to day 2 among women with poor ovarian response: a prospective randomized trial.
    Author: Bahceci M, Ulug U, Ciray HN, Akman MA, Erden HF.
    Journal: Fertil Steril; 2006 Jul; 86(1):81-5. PubMed ID: 16716322.
    Abstract:
    OBJECTIVE: To compare the outcome of day 2 and day 3 embryo transfers in women demonstrating poor ovarian response. DESIGN: Prospective randomized clinical trial. SETTING: Private assisted reproductive technology center. PATIENT(S): Two hundred eighty-one women demonstrating poor ovarian response to controlled ovarian hyperstimulation. INTERVENTION(S): Women who were poor responders were randomly allocated to day 2 or day 3 embryo transfer following oocyte retrieval. MAIN OUTCOME MEASURE(S): Implantation rates and pregnancy rates per oocyte retrieval and embryo transfer. RESULT(S): The clinical pregnancy rates per oocyte retrieval (37.2% vs. 21.4%, respectively; P<.05) and per embryo transfer (38.9% vs. 24.1%, respectively; P<.05) were significantly higher in the day 2 embryo transfer group compared with day 3. On the other hand, implantation rates were not different between groups (23.9% vs. 17.2%, respectively; P=.08). CONCLUSION(S): Our results demonstrated that transfering embryos on day 2 could provide an alternative to the management of poor responder patients.
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