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Association of Endometrial Thickness with Live Birth Rate: a Study Utilizing the Society for Assisted Reproductive Technology Clinic Outcome Reporting System.
Fertil Steril
January 2025
Division of Reproductive Endocrinology and Infertility, Department of Gynecology and Obstetrics, Johns Hopkins University School of Medicine, Lutherville, MD.
Objective: To assess the relationship between endometrial thickness and live birth rates in fresh embryo transfer and frozen embryo transfer with and without preimplantation genetic testing.
Design: Retrospective cohort study using the Society for Assisted Reproductive Technology Clinic Outcome Reporting System (SART CORS).
Subjects: Autologous IVF fresh and frozen embryo transfer cycles initiated in 2019-2020.
Immunohistochemical examination of PNAd, α4β1 integrin and MUC-2 expressions in the secretary phase endometrium of women diagnosed with recurrent implantation failure.
J Reprod Immunol
December 2024
Department of Histology and Embryology, Medical School, University of Cukurova, Adana, Turkiye.
Objective: Successful embryo implantation is contingent upon the intricate interaction between the endometrium and the blastocyst. Recurrent implantation failure (RIF) signifies the clinical challenge of failing pregnancy post-transfer of high-quality embryos, fresh or frozen, in at least three in vitro fertilization (IVF) cycles, often in women under 40 years. Recent studies identify impaired blastocyst maternal tissue communication among recurrent implantation failure causes.
View Article and Find Full Text PDFLegal framework and IVF outcomes: a comparative analysis of fresh and frozen embryo transfers in Switzerland.
Reprod Biomed Online
October 2024
Division of Gynaecological Endocrinology and Reproductive Medicine, University Women´s Hospital, Bern, Switzerland.
Research Question: To what extent do legislative measures impact standard reproductive outcome parameters?
Design: Retrospective cohort study using data from the Swiss national IVF registry analysing the outcomes of 13,908 women undergoing embryo transfers resulting from their first lifetime oocyte retrieval before (2014-2016) or after (2020-2022) revision of the legislation, allowing extended culture for 12 zygotes. Live birth rates (LBR) and cumulative LBR (cLBR) were compared in fresh and frozen embryo transfer strategies in both periods. Adjusted multivariable mixed model analyses were performed to determine OR and incidence rate ratios (IRR).
Marked blastomere herniation is the only post-thaw morphological characteristic associated with a reduced pregnancy rate for in vitro produced equine blastocysts.
Theriogenology
December 2024
University of Utrecht, Department of Clinical Sciences, Netherlands.
Article Synopsis
- The study investigates the relationship between the post-thaw morphology of cryopreserved equine IVP blastocysts and the likelihood of achieving pregnancy after transfer.
- The findings show that while the biopsy procedure before freezing does not negatively impact pregnancy outcomes, blastocysts with over 10% herniated cells post-thaw are less likely to result in pregnancy.
- Factors such as the interval between ICSI and blastocyst confirmation, and the specific stallion and mare involved, significantly influence pregnancy rates, with later developing embryos showing lower success rates.
Comparison of fresh testicular sperm aspiration and use of either thawed pre-frozen sperm or oocyte freezing: impact on cumulative live birth rates for couples experiencing ejaculation failure.
Hum Reprod
December 2024
Department of Obstetrics and Gynecology, Center for Reproductive Medicine, Guangdong Provincial Key Laboratory of Major Obstetric Diseases, Guangdong Provincial Clinical Research Center for Obstetrics and Gynecology, Guangdong-Hong Kong-Macao Greater Bay Area Higher Education Joint Laboratory of Maternal-Fetal Medicine, The Third Affiliated Hospital of Guangzhou Medical University, Guangzhou, China.
Study Question: Is there a difference in the cumulative live birth rate (CLBR) after fresh testicular sperm aspiration (TESA) compared with the use of either pre-frozen sperm or oocyte freezing for couples experiencing ejaculation failure on the day of oocyte retrieval?
Summary Answer: After adjusting for confounding factors, the use of pre-frozen sperm or the freezing and thawing of oocytes appeared to be as effective as TESA in achieving CLBRs for couples experiencing temporary ejaculation failure.
What Is Known Already: Male patients may be concerned about experiencing temporary ejaculation failure on the day of their partner's oocyte retrieval, in which case they may choose surgical sperm retrieval, oocyte freezing on the day, or have their sperm frozen in advance. However, the clinical efficacy of these three options has not yet been evaluated.
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