Natural Cycle Versus Stimulated Cycle Before Frozen Embryo Transfer
Status:
Completed
Trial end date:
2018-03-01
Target enrollment:
Participant gender:
Summary
Embryo freezing is a technique used regularly to optimize the pregnancy rate in case of
infertility. This method is performed in presence of supernumerary embryo(s) after fresh
transfer, or after freeze all embryos in case of medical reasons. It is necessary to control
that the transfer is performed when the endometrium is receptive, which is essential for
embryo implantation and pregnancy. This period is defined as the "implantation window".
Endometrial preparation can be achieved by hormone replacement therapy (HRT) or moderate
ovarian stimulation (SO). The implantation window can also be assessed by monitoring of a
natural cycle (NC). The objectives of this open randomized study is to compare the number of
visits (ultrasound and blood tests) induced by the SO or NC as well as the women quality of
life in both groups.