Objective: To review our patients' decisions for disposition of their cryopreserved embryos and compare the findings with those reported in the scientific literature. Patients who no longer wish to store their cryopreserved embryos have three choices: discarding, donation to research, or donation to someone else for initiation of a pregnancy.
Design: Retrospective review of patient records from January 2002 to July 2007 to determine preferences for embryo disposition.
Setting: University hospital.
Patient(s): Patients who elected to discontinue embryo cryostorage.
Intervention(s): None.
Main Outcome Measure(s): Patients' decisions regarding embryo disposition, length of storage, treatment outcome, age at oocyte retrieval, and age at time of disposition.
Result(s): A total of 149 disposition requests were reviewed, with 59% donating to scientific research, 38% discarding, and 3% donating to a known or anonymous person/couple for attempted pregnancy. There was no significant difference in the choice selected between patients who achieved a pregnancy with delivery compared with those who did not. Patient age at retrieval and at the time of disposition as well as the total time in storage was not significantly different between patients electing to discard and those donating to research.
Conclusion(s): Patients in our program wanting to discontinue cryostorage were more likely to request that their surplus embryos be used for scientific research.
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http://dx.doi.org/10.1016/j.fertnstert.2009.02.001 | DOI Listing |
Front Endocrinol (Lausanne)
January 2025
Department of Reproductive Medicine, Women's Hospital of Nanjing Medical University, Nanjing Women and Children's Healthcare Hospital, Nanjing, China.
Objectives: The increasing prevalence of obesity underscores the need to explore its impact on assisted reproductive technology (ART) outcomes. This study aims to evaluate the association between visceral fat area (VFA), measured by bioelectrical impedance analysis (BIA), and pregnancy outcomes following frozen embryo transfer (FET).
Methods: In this retrospective clinical study, the data of 1,510 patients who underwent FET between April 2022 and April 2023 were analyzed.
Vet Sci
January 2025
College of Animal Science and Technology, Shihezi University, Shihezi 832003, China.
Chlorogenic acid (CGA) has strong antioxidant properties. In order to improve the low maturation rate and poor vitrification freezing effect of sheep oocytes caused by oxidative stress. In this study, oocytes from 200 2-3-year-old Kazakh sheep were collected, and different concentrations of CGA were added to the maturation medium and vitrification freezing solution to study the effects of CGA on the maturation rate, cleavage rate, blastocyst rate, reactive oxygen species (ROS) and glutathione (GSH) levels, mitochondrial membrane potential, and the expression levels of oxidation and apoptosis-related genes in sheep oocytes.
View Article and Find Full Text PDFHum Reprod
January 2025
IVIRMA Global Research Alliance, IVIRMA New Jersey, Basking Ridge, NJ, USA.
Study Question: Does the use of slush nitrogen (SN) for embryo vitrification improve embryo transfer outcomes compared to liquid nitrogen (LN)?
Summary Answer: SN is a safe method for embryo preservation and significantly improves post-warming survival rates during repeated vitrification-warming cycles; however, after a single freeze-thaw cycle, pregnancy outcomes are not improved when embryos are vitrified with SN compared to LN.
What Is Known Already: SN is a combination of solid and LN, with a temperature lower than regular LN, and it is an alternative to conventional LN in achieving a faster cooling speed. Studies have shown that SN improves survival in non-human embryos and human oocytes.
JBRA Assist Reprod
January 2025
Department of Gynecology and Obstetrics, Ribeirão Preto Medical School of University of Sao Paulo, Ribeirão Preto, Brazil.
Objective: To investigate the perspectives of infertile couples regarding embryo cryopreservation throughout assisted reproduction treatment.
Methods: The convenience sample included infertile couples undergoing assisted reproduction treatment. They responded to a questionnaire specifically designed to gauge views and opinions on cryopreservation of surplus embryos.
BMJ Open
January 2025
Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
Introduction: Multimodal anticancer therapies greatly damage the fertility of breast cancer patients, which raises urgent demand for fertility preservation. The standard options for fertility preservation are oocyte and embryo cryopreservation; both require controlled ovarian hyperstimulation (COH). However, there are safety concerns regarding breast cancer relapse due to the elevated serum estradiol levels during COH.
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!