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Introduction: To evaluate patient preference for sperm disposition in case of death based on demographic factors and infertility etiology.
Materials And Methods: This retrospective cohort study was performed at a university hospital-affiliated fertility center. Charts of 550 men undergoing cryopreservation for assisted reproductive technologies (ART) between 2016-2019 were reviewed to create a descriptive dataset. Patients previously signed consent forms stating their preference for sperm transfer to their partner or disposal in the event of their subsequent death. Patients undergoing sperm cryopreservation for the purpose of ART were analyzed to assess associations between demographic characteristics and etiology of infertility and their choice to either transfer sperm to their partner or discard.
Results: A total of 84.9% (342/403) of patients included in final analyses elected to transfer their sperm to their partner in the event of their death. Factors associated with a significantly increased likelihood to transfer versus discard included a male-factor infertility diagnosis compared to female-factor infertility diagnosis (transfer rate 89.3% vs. 79.9%; p = .022) and commercial insurance coverage versus non-commercial/no insurance coverage (transfer rate 86.3% vs. 75.0%, p = .029). No significant differences relating to age, race/ethnicity, occupation classification, marital status or duration of marriage, or prior paternity were found.
Conclusion: A majority of male patients seeking sperm cryopreservation for ART elected to transfer their sperm to their partner if future death should occur. There does not appear to be a clear factor that would impact this decision based on demographic characteristics.
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J Econ Entomol
September 2025
Departamento de Ecología de Artrópodos y Manejo de Plagas, El Colegio de la Frontera Sur, Tapachula, Chiapas, Mexico.
Ionizing radiation is widely used in insect sterilization for pest control using the Sterile Insect Technique, which consists of the mass rearing of insects and their irradiation with gamma rays to release them in target areas where they will mate with wild females. However, there is a concern and controversy about the nuclear origin applied in this technique. One alternative for sterilization is the use of X-rays, which do not have a nuclear origin, are easier to operate, and do not generate radioactive waste.
View Article and Find Full Text PDFMol Genet Genomic Med
September 2025
Cytogenetic Laboratories, Shahid Beheshti Hospital, Hamadan University of Medical Sciences, Hamadan, Iran.
Background: Recurrent Implantation Failure (RIF) is defined as the inability to establish pregnancy despite high-quality embryo transfer after the application of at least three consecutive in vitro fertilization (IVF)/intracytoplasmic sperm injection-embryo transfer procedures. Chromosomal abnormalities are one of the primary reasons for pregnancy failure, miscarriage, and birth defects in both natural conception and IVF pregnancies. This study was to evaluate the incidence of chromosomal abnormalities in peripheral blood samples from 100 couples who experienced RIF.
View Article and Find Full Text PDFFront Vet Sci
August 2025
Department of Internal Medicine, Reproduction and Population Medicine, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium.
Nano-sized extracellular vesicles (EVs) possess a lipid bilayer and are secreted from cells into their surrounding environment. The transport of multiple biomolecules, including DNA together with RNA, microRNAs (miRNAs), lipids, proteins, and metabolites, happens through biofluids via EVs for intercellular communication. Extracellular vesicles play crucial roles during the embryo production (IVEP) process.
View Article and Find Full Text PDFEur J Med Res
September 2025
Reproductive Medicine Center, Jiangxi Maternal and Child Health Hospital, Nanchang, China.
Background: Fresh embryo transfer reduces waiting time and minimizes embryo cryodamage for endometriosis (EM) patients. The current prediction models for fresh embryo transfer outcomes in EM primarily rely on logistic regression, with limited application of machine learning (ML) approaches. This study aimed to develop an ML-based predictive model for clinical pregnancy in EM patients undergoing fresh embryo transfer.
View Article and Find Full Text PDFEur J Obstet Gynecol Reprod Biol
September 2025
Department of Obstetrics and Gynaecology, University of Medicine and Pharmacy at Ho Chi Minh City, Vietnam.
Research Question: Does progestin-primed ovarian stimulation (PPOS) using dydrogesterone yield a live birth rate comparable with the gonadotrophin-releasing hormone (GnRH) antagonist protocol in in-vitro fertilization (IVF) freeze-all cycles?
Design: This retrospective cohort study, conducted at a tertiary hospital from June 2022 to January 2024, included 1045 women aged 18-40 years undergoing IVF/intracytoplasmic sperm injection with freeze-all indications. Participants were assigned to receive PPOS-dydrogesterone (n = 482) or GnRH antagonist (n = 563), followed by frozen embryo transfer (FET). The primary outcome was the live birth rate after the first FET cycle.