View clinical trials related to Clinical Pregnancy.
Filter by:Introduction: Based on recent studies the suggestion is that natural cycle frozen embryo transfers (NC FET) should preferably be used, with evidence suggesting that artificial cycle FET (AC FET) is subject to increased risks of adverse obstetric and perinatal outcomes and possibly lower live birth rates. There, however, is limited evidence on the most efficient and effective timing of NC FET following oocyte retrieval. Objective: In this non-inferiority randomised controlled trial, the effect on reproductive outcomes of NC FET performed immediately following the oocyte retrieval cycle (i.e., after one menstruation) will be investigated. Materials and Methods: At a single IVF centre, patients will be recruited from infertile patients presenting for freeze-all-IVF treatments. Patients aged 18 to 30 years will be enrolled, if they had ≤2 previous embryo transfers and had ≥1 blastocyst cryopreserved in their freeze-all cycles. Enrolled patients (N = 800) will be randomised (1:1) to either the immediate group (i.e., FET performed in the menstrual cycle immediately following the oocyte retrieval cycle) or the delayed group (i.e., FET performed in the menstrual cycle following two menstruations). All FET will be performed in NC. The primary outcome measure will be clinical pregnancy, defined as the visual confirmation by transvaginal ultrasound scan of a gestational sac with normal heartbeat at >5 weeks of gestation. The analyses will be performed according to per-procedure principles. Results: The ovarian, endometrial and time to transfer outcomes of the immediate group will be compared with those of the delayed group. The clinical pregnancy rate of the immediate group will be compared with that of the delayed group.
Introduction: Although innovative procedural changes in frozen embryo transfer (FET) cycles have increased the implantation rate of blastocysts transferred significantly, blastocyst selection remains a significant limiting factor in implantation outcomes. To improve implantation rates requires conventional microscopic blastocyst morphology scoring/selection technique to be replaced by an enhanced blastocyst selection technique or for the conventional morphology selection technique to be strengthened by novel supplementary selection techniques. Blastocoel fluid biopsy with DNA amplification is a minimally invasive (mi) technique that may supplement a blastocyst morphology score variables with a genetic variable. Objective: In the present randomized controlled trial (RCT), DNA amplification in blastocoel fluid biopsies (BF-biopsy) will be investigated as a supplementary measure to select blastocysts for transfer in conjunction with blastocyst morphology scores. The objective will be to develop a minimally invasive blastocyst selection technique, which will improve selection and increase clinical implantations, while not increasing costs. Materials and Methods: A single IVF centre double-blind randomised controlled trial, with patients recruited having female age 18 to 35 years from infertile patients presenting for freeze-all-IVF treatment. Enrolled patients (N = 500) with ≥five 2PN zygotes after ICSI will be randomised (1:1) to the two arms of the trial (i.e., test and control arm). In the test arm, 3 blastocysts will undergo blastocoel fluid biopsy (BF-biopsy) and whole-genomic amplification. Single blastocysts with no DNA amplification will be transferred in FETs of the test arm and single top-scoring blastocysts will be transferred in FETs of the control arm. The primary outcome measure of the trial will be clinical implantation (i.e., gestational sac with fetal heartbeat). Results: The clinical implantation outcomes of FETs in which score-selected single blastocyst with no DNA amplification and score-selected single blastocysts were transferred will be compared.
Objective: In this study, our aim will be investigating the pregnancy results in unexplained infertile women undergoing ICSI, by flushing the endometrial cavity with folliculer fluid, that we maintain mature follicules inside them in oocyte retrieval day. Study Design: 100 subfertile women who applied to Zeynep Kamil Hospital, In Vitro Fertilization Center between October 2016 to May 2017 will be randomized with computer generated programme. The patients will be divided into two groups; follicular fluid group (n=50) and control group (n=50). The inclusion criterias are: age between 20-39 years, basal FSH level < 10 mIU/ml, body mass index<35 kg/m2 and E2 levels in human chorionic gonadotropin (hCG) day between 1000-4000 pg/ml. Patients meets these criteria will be included to the study programme. The exclusion criteria are determined as below: previously diagnosed endometriosis, uterine leiomyomas, hydrosalpinx, endocrinological disorders; previous history of implantation failure in IVF/ICSI cycles and severe male factor infertility.
A single centre observational study into the segmentation of preimplantation genetic diagnosis (PGD) treatment by comparing cumulative pregnancy rates following cryopreservation of all genetically transferable embryos after PGD, compared to fresh embryo transfer cumulative with frozen embryo transfer of genetically transferable embryos.The primary aim of the study is to assess the feasibility and effectiveness of segmentation in terms of pregnancy rates. The secondary aim is to assess the logistic advantage of segmentation in PGD cycles. Experimental questions 1. Is the cumulative live birth rate rate of a single PGD treatment when all genetically transferable embryos are cryopreserved by vitrification prior to consecutive in utero transfer in unstimulated cycles, superior to PGD treatment with fresh embryo transfer cumulative with transfer of supernumerary cryopreserved embryos? 2. Does the technique of segmentation allow better planning of DNA amplification and genetic analysis? Design The proposed design is a pragmatic, prospective randomised controlled trial