View clinical trials related to IVF.
Filter by:This study is a comparison between the current standard practice of performing a transvaginal oocyte retrieval (TVOR) with paracervical block (PCB) and a relatively recently developed technology of virtual reality that is added to the above mentioned standard practice of TVOR + PCB. The aim of the study is to find out whether this newer technology has an advantage for the patient, in terms of anxiety and pain reduction or satisfaction.
Infertility is a disease that seriously affects the physical and mental health of women of childbearing age. The incidence of infertility has been increasing in recent years. Studies have shown that the occurrence of infertility may be related to environmental endocrine disrupting substances. This project was designed to establish a cohort study on environmental endocrine disrupting substances and in vitro fertilization (IVF) treatment, collect blood, urine, semen, follicular fluid, granulosa cells, chorionic decidua biological specimens, and then follow up on the pregnancy outcomes. The concentration of disrupting substances was detected and then found the associations between environmental endocrine disrupting substances and female reproductive health.
We aimed to investigate whether endometrial scratching could improve IVF outcomes by enhancing endometrial receptivity in patients with endometriosis.
This study aims to investigate the efficacy of 3 different trigggers used for final maturation in the second ovarian stimulation in double stimulation protocol (aGnRH and hCG-rec vs. aGnRH only vs. hCG-rec only). The main objective is to compare the number of all retrieved oocytes and mature oocytes in patients predicted to be low ovarian responders. This is a controlled randomized clinical study where 165 patients will be recruited.
The objective of our study is to compare in vitro fertilization (IVF) outcomes between fresh embryo transfer (ET) and frozen-thawed ET in women with polycystic ovary syndrome (PCOS).
The study participants' relevant medical records will be collected and reviewed for the retrospective subjects and after obtaining informed consent for the prospective subjects. The study materials that will be used will include blood tests, transvaginal ultrasound and magnetic resonance imaging (MRI). The study will involve two study arms
During an In Vitro Fertilization (IVF) attempt, several embryos are obtained but not all of them can be transferred to the uterus in the same cycle due to the risk of multiple pregnancies. Thus, it is very common for these couples to benefit from cryopreservation. Patients scheduled for frozen embryo transfer (TEC) receive estrogen and progesterone replacement therapy to prepare the endometrium for implantation. Data from the literature recently showed that low progesterone on the day of embryo transfer was responsible for a significantly higher rate of implantation failure and miscarriage.
In the study the investigators would like to examine the effect of GnRH antagonist administration at the beginning of the follicular phase in patients presenting with high baseline estradiol levels of 200 pmol/L or above with a leading follicle of 11-13 mm. In the unit's practice, patients presenting for cycle initiation with a leading follicle > 10 in the presence of E2 > 200 pmol/L (54 pg/ml) are deferred and receive a priming antagonist protocol in their sequential cycle. The aim of this intervention is to suppress FSH levels at the beginning of the cycle thus preventing estradiol secretion of the leading follicle. This may contribute to better synchronization of the remaining antral follicles cohort and allow for a better cycle outcome instead of cancellation or one-month postponement. As previous studies using GnRH antagonist pre-treatment prior to GT initiation for synchronization purposes demonstrated positive results (including different patient population) , no deleterious effects are expected.
Poor fertilisation plays a significant role in poor artificial reproductive technique outcomes. Male factor infertility accounts for a large portion of such cases. Several modalities have been proposed as a solution, including physiological intra-cytoplasmic sperm injection (PICSI). PICSI is a technique used to select the sperm to use in intra-cytoplasmic sperm injection (ICSI) treatment. It involves placing sperm with hyaluronic acid, a natural compound found in the body. PICSI identifies sperm that can bind to hyaluronic acid and these sperms are selected for use in treatment. Some studies have suggested that PISCI may be advantageous to reduce miscarriage. However, the evidence is not strong and it remains unknown if PICSI is effective in a selected group of couples with a history of poor fertilisation. Based on previous medical records, we observed a higher clinical pregnancy rate (CPR) and a trend towards lower miscarriage rates with PICSI. To verify the findings and address the clinical gap, we propose a randomised controlled trial (RCT) with 234 couples (117 in each group) to evaluate the effectiveness of PICSI comparing with ICSI for improving CPR and reducing miscarriage rate in couples with a fertilisation rate of <50% in their first cycle of ICSI.
In this study we would like to examine the effect of GnRH antagonist administration at the beginning of the follicular phase in patient presenting with a simple ovarian cyst 25-50 mm. The aim of this intervention is to allow a spontaneous regression of the ovarian cyst (if in nature) while ensuring a pituitary downregulation to prevent the beginning of a leading follicle recruitment. As previous studies using GnRH antagonist pre-treatment prior to GT initiation for other purposes demonstrated positive results (including different patient population) , no deleterious effects are expected.