This study aimed to assess frozen-thawed embryo transfer (FET) outcomes in natural, hormone replacement treatment (HRT) and semi-HRT cycles. This was a retrospective cohort study of 5414 cycles of patients in an academic hospital. Patients were grouped as 2216 natural cycles, 1180 semi-HRT cycles, and 2018 HRT cycles. Primary outcome measures were implantation rate, clinical pregnancy rate and ...

The aim of this prospective study was to compare the endometrial microbiome between pregnant and non-pregnant women after frozen embryo transfer (FET) with euploid embryos. Endometrial biopsies were collected from 30 during mid-luteal phase in a natural cycle. FET performed embryos up 3 months biopsy. microbiota composition analysed using 16S rRNA (v4-v5 region) next generation sequencing (NGS)...

ObjectiveTo determine if the time from oocyte retrieval to frozen embryo transfer (FET) in natural cycle affects reproductive or neonatal outcomes.DesignRetrospective cohort.SettingNot applicable.Patient(s)Five hundred and seventy-six consecutive freeze-all cycles January 2011 December 2018 followed by FET of a single blastocyst.Intervention(s)None.Main Outcome Measure(s)Primary outcome live bi...

Introduction The failure of remodeling the spiral arteries is associated with pathogenesis preeclampsia. Estradiol (E2) plays a crucial role in placentation and may be involved development However, there lack data this area. This study aims to assess association between serum estradiol levels early pregnancy risk Methods We conducted retrospective cohort on patients who conceived after frozen e...

Objective To evaluate the effects of different ovarian stimulation protocols on in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) outcomes infertile women with adenomyosis. Methods We carried out a retrospective cohort study among adenomyosis receiving IVF/ICSI treatment, including 257 fresh embryo transfer (ET) cycles and 305 frozen (FET) cycles. In ET cycles, ultra-long, long...

Abstract Study question Does season and duration of daylight hours at the time oocyte collection impact on live birth rates following frozen embryo transfer? Summary answer Frozen transfer in summer had 30% increased odds compared to oocytes collected autumn. What is known already Season conditions fresh or do not appear rates. Recent data from northwest USA suggest summer, independent transfer...

BACKGROUND Embryo transfer to a developed endometrium is an important prognostic factor in frozen-thawed embryo transfer cycle outcome. Vaginal estrogen, such as Vagifem vaginal tablets and Premarin vaginal cream, is a regimen used for the patients with refractive endometria. OBJECTIVE Our objective was to compare the effects of Vagifem and Premarin on the endometrial thickness of the patient...

OBJECTIVE To compare pregnancy rates with fresh and frozen embryo transfer in patients admitted to Royal Jubilee Maternity Service (RJMS), Belfast between January 1st 2004 and December 31st 2005 with ovarian hyperstimulation syndrome (OHSS). METHOD A retrospective analysis of all ART cycles (2,283) carried out in RJMS between January 1st 2004 and December 31st 2005 and of all patients admitte...