Frozen-thawed embryo transfer cycles
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چکیده
In order to reduce the chance of multiple pregnancy during in-vitro fertilisation (IVF)– embryo transfer treatment, there is an increasing trend towards transferring a lower number of embryos. Surplus good-quality embryos are then transferred in frozen-thawed embryo transfer (FET) cycles. The first pregnancy after FET was reported in 1983.1 It has been estimated that in IVF programmes in which embryo cryopreservation is implemented, up to 42% of all implantations could be derived by FET.2 Elective cryopreservation of all fresh embryos is also required in special circumstances where fresh embryo transfer is undesirable. Examples of the latter include: patients in whom the risk of ovarian hyperstimulation syndrome (OHSS) is high, or those involving oocyte or embryo donations where a quarantine period is advisable.
منابع مشابه
Effect of Progesterone Supplementation on Natural Frozen-Thawed Embryo Transfer Cycles: A Randomized Controlled Trial
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I-29: Luteal Phase Support in Frozen-Thawed Embryo Transfer Cycle
Cumulative pregnancy rate has been significantly increased since frozen-thawed embryo transfer was applied in ART cycles. This method has become an essential part of IVF/ICSI treatment. Luteal phase support has been proven to be associated with higher rate of live birth rate. Human chorionic gonadotropin (HCG), and progestrone have been successfully used for luteal phase support in ovarian stim...
متن کاملI-29: Can Fresh Embryo Transfers Be Replacedby Cryopreserved-Thawed Embryo Transfers inAssisted Reproductive Cycles? A RandomizedControlled Trial
Background: Controlled ovarian stimulation (COS) has been shown to advance endometrial maturation and affect adversely implantation in assisted reproduction technology (ART) cycles. It has been reported that there is a better embryo-endometrium synchrony in frozenthawed embryo transfer (FET) cycles than fresh embryo transfer (ET) cycles. The Background of this study was to compare ongoing pregn...
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Background: The objective of this study is to evaluate whether low-dose aspirin affects doppler sonographic parameters of the uterine arteries, endometrial thickness and pregnancy rate of women undergoing frozen-thawed embryo transfer cycles. Materials and Methods: This randomized, double- blind, placebo-controlled trial study was conducted between April 2012, and March 2013. A total of 60 elig...
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متن کاملThe Analysis of Factors Affecting the Success Rate of Frozen Thawed Embryos in IVF / ICSI Cycles
Purpose: the aim of this study is to analyze the factors contributing to the success of frozen- thawed embryo transfer (ET). Material and method: This retrospective, case-control study was carried out on 700 infertile couples treated with IVF and ICSI and had embryo freezing in Isfahan Fertility and Infertility Center, Iran, from the beginning of July 2000 to the end of June 2003. Results: fa...
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