BACKGROUND We have previously shown that the medium used for culturing IVF embryos affects the birthweight of the resulting newborns. This observation with potentially far-reaching clinical consequences during later life, was made in singletons conceived during the first IVF treatment cycle after the transfer of fresh embryos. In the present study, we hypothesize that in vitro culture of embryo...

Aim: The progesterone’s optimal route for luteal phase support (LPS) in frozen-thawed embryo transfer (FET) cycles is controversial. This study investigates the effect of three treatment regimens progesterone: vaginal, oral, and subcutaneous form LPS FET cycles.
 Material Method: Blastocyst cryopreserved utilizing subcutaneous, or oral forms progesterone between December 2018 May 2020 were...

background: gnrh agonist and antagonist were developed to control the premature release of lh surge. there is some difference between two protocols. objective: we compared the outcome of frozen-thawed embryo transfer in infertile women who used gnrh agonist or antagonist protocol for previous coh cycle and evaluation of any adverse effect of gnrh antagonist on oocyte and embryo. materials and m...

BACKGROUND Natural endometrium in Frozen-thawed Embryo Transfer (FET) may have some benefits upon implantation in patients with Repeated Implantation Failure (RIF). It might be due to possible differences between natural and stimulated endometrial growth factors and cytokins secretions. OBJECTIVE The objective of this study was to compare the pregnancy rate of FET on modified natural cycle ve...

ObjectiveTo determine whether vaginal progesterone for programmed endometrial preparation is noninferior to intramuscular in terms of live birth rates from frozen embryo transfer (FET).DesignThree-armed, randomized, controlled noninferiority trial.SettingMulticenter fertility clinic.Patient(s)A total 1,346 volunteer subjects planning vitrified-warmed high-quality nonbiopsied blastocysts were sc...

Abstract Background Vitrification has become the method of choice for cryopreservation human embryos and gametes. There are multiple commercial media, containing different combinations concentrations cryoprotectants, available vitrification warming procedures. The aim this retrospective study was to compare post-warming survival rate clinical outcomes cleavage stage vitrified/warmed using two m...

OBJECTIVE To investigate whether serum levels of estradiol affect reproductive outcomes of normoresponder women undergoing fresh embryo transfer (ET) versus frozen-thawed ET (FET). MATERIAL AND METHODS Two hundred fifty-five normoresponder women underwent fresh ET in their first or second in vitro fertilization cycle. Ninety-two women with negative pregnacy test results underwent FET. Clinica...

Objective: This study aimed to evaluate the effectiveness of elective single embryo transfer (eSET) versus double (DET) in frozen cycles following vitro fertilization (IVF) treatment good prognosis patients. The outcome would provide medical data for multiple pregnancy rate reduction IVF treatment.
 Methods: multicenter retrospective cohort was performed patients undergoing first (FET) at ...

Endometrium is one of the main factors in pregnancy. During assisted reproductive technology (ART) treatments, some cycles are cancelled due to inadequate endometrial growth. This study was conducted to evaluate the effectiveness of platelet-rich plasma (PRP) in the treatment of thin endometrium. Ten patients with history of inadequate endometrial growth in frozen-thawed embryo transfer (FET) c...