نتایج جستجو برای: blastocyst transfer
تعداد نتایج: 296851 فیلتر نتایج به سال:
OBJECTIVE Assisted reproductive technology has been associated with an increase in multiple pregnancies. The most effective strategy for reducing multiple pregnancies is single embryo transfer. Beginning in October 2015, the National Supporting Program for Infertility in South Korea has limited the number of embryos that can be transferred per in vitro fertilization (IVF) cycle depending on the...
OBJECTIVE The purpose of this study was to evaluate the efficacy of frozen mixed double-embryo transfer (MDET; the simultaneous transfer of day 3 and day 5 embryos) in comparison with frozen blastocyst double-embryo transfer (BDET; transfer of two day 5 blastocysts) in patients with repeated implantation failure (RIF). METHODS A total of 104 women with RIF who underwent frozen MDET (n=48) or ...
Following intracytoplasmic sperm injection (ICSI), approximately 60-70% of oocytes are fertilized and of these embryos, approximately 45% withstand in-vitro culture conditions to produce healthy blastocysts. The efficiency of implantation of 2-4-cell embryos selected at the pronuclear stage and that of blastocysts are comparable. However, prolonged selection of embryos in vitro (4-5 days), has ...
BACKGROUND This study was to examine the developmental capacity of oocytes collected from an in vitro maturation (IVM) programme according to their maturation time. METHODS The study included 47 IVM cycles that underwent blastocyst transfer. The patients (n = 38) were primed with 10 000 IU HCG 36 h before their oocyte retrieval. The oocytes were classified into three groups: group 1 (n = 139)...
In order to study the impact of procedures of IVF/ICSI technology on sex ratio in China, we conducted this multi-center retrospective study including 121,247 babies born to 93,895 women in China. There were 62,700 male babies and 58,477 female babies, making the sex ratio being 51.8% (Male: Female = 107:100). In univariate logistic regression analysis, sex ratio was imbalance toward females of...
A 28-year-old patient presented for preimplantation genetic screening (PGS) for family balancing utilizing previously vitrified blastocysts and day-2 embryos. To synchronize endometrial development with the embryos to be transferred, five embryos vitrified on day 2 were warmed 3 days prior to scheduled transfer. Three of them developed to 8-, 8- and 7-cell stages, respectively, and were biopsie...
Ooplasmic factors drive nuclear organization after fertilization and are also important for re-programming in nuclear transfer procedures, in which artificial activation is essential for reconstructed embryos to progress in development. The present research evaluated the effect of pronuclear transfer (PT) between zygotes parthenogenetically activated with ionomycin followed by strontium (S) or ...
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