Marcelo O Ferreira

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A common observation in oocyte in vitro maturation (IVM) cycles is poor embryo quality. However, no study was dedicated to assess zygote and early cleavage embryo quality in IVM cycles. The objective of this study is to analyze fertilization outcome, embryo development and the resulting pregnancy and births in unstimulated IVM cycles. IVM oocytes were(More)
PURPOSE to report three cases of spontaneous gestation in women with polycystic ovarian syndrome (PCOS), that occurred in the months subsequent to transvaginal oocyte retrieval for in vitro maturation (IVM). METHODS three infertile patients with PCOS, submitted to oocytes' IVM without previous ovarian stimulation, were included in the study. During the(More)
The cryopreservation of human embryos in different cleavage stages has been employed as part of assisted reproduction technologies (ART), as it allows the transfer of less embryos and increases the cumulative gestation rate of a couple. Human embryos can be cryopreserved by slow or ultra-rapid freezing and vitrification. For decades, human embryos have been(More)
OBJECTIVE The aim of the present study was to assess the putative relationship between patient's age and blastocyst scores, in single (SET) or double (DET) transfer cycles, that resulted in single or twin pregnancy or non-pregnancy. Second, we analyzed the effect of maternal age on clinical gestation and implantation rates after single and double blastocyst(More)
To describe a unique case of MZ dichorionic twins and MZ monochorionic triplets in a quintuplet gestation after intracytoplasmatic sperm injection (ICSI) and blastocyst transfer. Case report. A 24-year-old woman underwent ICSI and received two blastocysts transferred. A quintuplet gestation was established .Transvaginal ultrasonography was performed(More)
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