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.
For infertile couples supported by in vitro fertilization, embryo freezing is a technique used regularly to optimize the pregnancy rate per retrieval of oocytes. This method is performed in case of supernumerary embryo(s) after fresh embryo transfer, or freeze all of the embryonic cohort in case of medical reasons preventing the transfer. The embryo or embryos can then be thawed and transferred (FET) to achieve a live birth. However, it is necessary to first ensure that the transfer is carried out at a time 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 performed by hormone replacement therapy (HRT) or moderate ovarian stimulation (SO). The implantation window can also be assessed by the monitoring of a natural cycle (NC). The choice of the key moment for the transfer is determined by ovulation and / or the rise of progesterone. To date, no study has demonstrated the superiority of one protocol over another in terms of birth rates. In the investigative center, treatment is usually carried out by daily subcutaneous injections of gonadotrophins followed by ovulation induction. In this context, the implementation of the FET in natural cycle may appear less burdensome for the patient and more physiological. The consideration is additional constraints, NC imposing more frequent monitoring (ultrasound and / or hormone assays) to detect the ovulation peak and less freedom in choosing the date of transfer. The average number of visits with SO is 2.6 per cycle. The aim of this study is to compare the stresses and safety of these two therapeutic proposals to determine the least restrictive for patients.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
HEALTH_SERVICES_RESEARCH
Masking
NONE
Enrollment
124
Ovulation is not induced by drugs
Ovulation is induced by recombinant follitropin alpha and recombinant choriogonadotropin
CHI Creteil
Créteil, France
Number of visits
number of visits (for clinical examination, ultrasound and hormonal dosage) required to monitor ovulation in both groups
Time frame: From inclusion visit to embryo transfer : up to 90 days
Fertiqol
the score of quality of life related to the couple's infertility, the Fertiqol questionnaire, a questionnaire validated by the European Society of Human Reproduction and Embryology (ESHRE) and taking into account the tolerance to treatment;
Time frame: From inclusion visit to embryo transfer : up to 90 days
defrost cancellation rate
the defrost cancellation rate cycle started, whatever the cause: Early ovulation problem of organization, ... excluding "non-transfer" related to embryo lysis thawing
Time frame: From inclusion visit to embryo transfer : up to 90 days
transfer on weekends and holidays
the transfer rate on weekends and holidays
Time frame: From inclusion visit to embryo transfer : up to 90 days
HCG levels> 100 U / L
the incipient pregnancy rate per transfer defined by a HCG levels\> 100 U / L
Time frame: From inclusion visit to pregnancy test : up to 100 days
pregnancy
the rate of pregnancy by ultrasound transfer defined by the presence of a cardiac activity
Time frame: From pregnancy test to ultrasound at 6 week of gestation : up to 100 days
Birth
The live birth rate per transfer defined by the birth of at least one living child
Time frame: From transfer to delivery : up to 9 months
Gestationnal age at delivery
the term of delivery
Time frame: From transfer to delivery : up to 9 months
Implantation
the implantation rate defined by the total number of live births to the total number of embryos replaced
Time frame: From transfer to delivery : up to 9 months
Miscarriage
the rate of early miscarriage (before 12 SA)
Time frame: From pregnancy test to ultrasound at 6 week of gestation : up to 100 days
Cost
the average estimated cost of drug treatment and monitoring (ultrasound and hormone assays).
Time frame: From pregnancy test to ultrasound at 6 week of gestation : up to 100 days
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