The article, which focuses only on the prevention of the sperm and/or the frozen embryo mix-up, will begin by elaborating on the acute need to prevent the next gamete and zygote mix-up scenario. Afterwards, it will explore the practical methods already existing and the technologies. The main chapter will suggest the possible artificial intelligence technologies in the narrow field of artificial insemination for achieving that goal.
View Article and Find Full Text PDFIntroduction: In singleton pregnancies, an increased risk of Postpartum hemorrhage (PPH) have been linked with assisted reproductive technology (ART) and abnormal placentation. It is unknown wheather such association exists in twin pregnancies conceived by Medically assisted reproduction (MAR). The aim of the current study was to compare maternal blood loss among twin pregnancies conceived by different types of MAR treatments to spontaneously conceived twins and to identify the cycle characteristics if an association exits.
View Article and Find Full Text PDFJ Assist Reprod Genet
April 2022
Purpose: To provide the clinicians with the most comprehensive medical information about sperm acquisition peri/postmortem.
Methods: The review was conducted according to the PRISMA statement. MEDLINE and Cochrane databases were searched up to January 2021.
Purpose: Does an association exist between serum progesterone and estradiol levels and live birth rates in artificial cycle frozen embryo transfer (AC-FET)?
Methods: Retrospective cohort study was based on prospectively collected data at a university-affiliated fertility center. Included were all cycles using an artificial endometrial preparation with estradiol hemihydrate (Estrofem, 2 mg/8 h) and vaginal progesterone (Endometrin 100 mg/8 h), autologous oocytes, and cleavage stage embryo transfers. Serum progesterone and estradiol levels were measured 14 days after FET.
J Gynecol Obstet Hum Reprod
September 2021
Background: In ART, oocyte maturation (M2) and ovulation is stimulated by a hormonal trigger. For maturation to occur, sufficient "lag time" must elapse between the trigger and aspiration, ranging from 32 to 38 hours. Premature aspiration can result in poor yields; late aspiration risks spontaneous ovulation.
View Article and Find Full Text PDFIntroduction: Previous publications examined the endocrinology of follicular stimulation, focusing on luteinizing hormone (LH) levels changes. In selected, good prognosis IVF patients, a sharp drop in LH serum level was demonstrated between cycle days 2 and 6.
Objective: The purpose of this study was to examine if this finding holds true for unselected patients.
Background/aims: Gonadotropin releasing hormone (GnRH) agonist triggering results in an endogenous gonadotropin flare. Although it effectively stimulates ovulation, GnRH agonist triggers results in an early luteolysis and requires modification of the luteal support. The current study aims to evaluate GnRH agonist triggering with exclusive human chorionic gonadotropin (hCG) luteal support.
View Article and Find Full Text PDFObjective: Thromboelastography (TEG) is a viscoelastic test of hemostasis which allows measurement of the processes of clot initiation, propagation, stabilization, and dissolution in real time. In this study we aimed to evaluate the alterations in coagulation as measured by TEG during In Vitro Fertilization (IVF) stimulation cycles and to investigate whether final oocyte maturation with recombinant hCG (rhCG) versus GnRH agonist results in a different coagulation state.
Study Design: This is a prospective observational study which included fifty-three normogonadotrophic women.
Context: PCOS is a heterogeneous condition characterized by hyperandrogenism and chronic anovulation and affects about 10% of women. Its etiology is poorly known, but a dysregulation of gonadotropin secretion is one of its hallmarks.
Objective: As the etiology of PCOS is unclear, we have performed a genome-wide analysis of a consanguineous family with three sisters diagnosed with PCOS.
Objective: To evaluate the general health, mental health, and cognitive ability of assisted reproductive technology (ART)-conceived adolescents.
Design: A nested case-control study within a historic cohort.
Setting: Not applicable.
The human oocyte is surrounded by hyaluronic acid, which acts as a natural selector of spermatozoa. Human sperm that express hyaluronic acid receptors and bind to hyaluronic acid have normal shape, minimal DNA fragmentation and low frequency of chromosomal aneuploidies. Use of hyaluronic acid binding assays in intracytoplasmic sperm injection (ICSI) cycles to improve clinical outcomes has been studied, although none of these studies had sufficient statistical power.
View Article and Find Full Text PDFIsrael is a world leader in the utilization rate of in vitro fertilization (IVF). During many IVF cycles, spare fertilized oocytes are cryopreserved. Today, thousands of fertilized oocytes, cryopreserved long ago, are stored in Israeli IVF units.
View Article and Find Full Text PDFIntrauterine insemination (IUI) during ovarian stimulation cycles is typically performed 36 hours after human chorionic gonadotropin (hCG) injection. We hypothesized that adjusting the time interval to IUI to better coincide with ovulation may increase pregnancy rates. Patients undergoing induction of ovulation utilizing gonadotropins and gonadotropin releasing hormone (GnRH) antagonists and IUI were divided to three groups based on the time from hCG injection to IUI: 36, 42, and 48 hours.
View Article and Find Full Text PDFObjective: To study the correlation between the lag time from ovulation trigger to oocyte aspiration and the proportion of metaphase II (MII) mature oocytes aspirated.
Design: Retrospective study.
Setting: Fertility and IVF center in an academic regional hospital.
Objective: To assess the feasibility, efficacy, and safety of rescue intracytoplasmic sperm injection (ICSI) in cases of fertilization failure, using a scientific literature search.
Design: Systematic review.
Setting: Centers for reproductive care.
Syst Biol Reprod Med
October 2013
The haptoglobin (Hp) protein has been implicated in various aspects of reproduction. One possible mechanism is through its effect on angiogenesis. Angiogenesis plays a major role in follicle production.
View Article and Find Full Text PDFObjective: To define the association between thrombophilia and unexplained stillbirth.
Design: A case-control study.
Setting: Obstetric department in a university affiliated hospital (Ha'Emek Medical Center, Afula).
Eur J Obstet Gynecol Reprod Biol
October 2002
Objective: To examine prospectively the effect on pregnancy outcome of a management protocol, that adds ultrasonographic weight estimation in fetuses suspected clinically as large.
Study Design: Prospective follow up study of all singleton deliveries during a 1 year period. All patients underwent routine clinical estimation of fetal weight.