View clinical trials related to Subfertility.
Filter by:A randomised trial on the use of luteal phase support in frozen-thawed embryo transfer cycles. The hypothesis of the study is that the use of luteal phase support with human chorionic gonadotrophin would increase the pregnancy rate in frozen-thawed embryo transfer cycles.
This is a study to determine whether a low calorie diet using meal replacement shakes compared to current counseling about diet, followed by 3 cycles of clomiphene citrate (if needed) will result in: 1) improvements in ability to ovulate and achieve pregnancy either spontaneously or during 3 clomiphene citrate cycles 2) greater weight loss with reductions in waist and hip circumferences and improvements in hormones that are involved in allowing pregnancy to occur and hormones that are involved in metabolism, such as insulin and glucose (sugar) 3) improvements in other health conditions such as blood pressure, and emotional and physical well-being. Women eligible to participate will be between the ages of 18-35 with a BMI (ratio of weight in kg divided by height in m2) of ≥ 35≤45 kg/m2 who are seeking help for anovulatory infertility including women with a diagnosis of polycystic ovarian syndrome (PCOS).
By randomizing sub-fertile women to either control or office-hysteroscopy in the circle prior to IVF or ICSI (intracytoplasmatic sperm injection ) treatment, we aim to enlighten whether hysteroscopy with endometrial biopsy increases pregnancy rates in the intervention group.
What is the best medication for hormonal stimulation in cycles with high intra-uterine insemination: tablets of Clomifen (5 days) followed by tablets of Ethinyl Estradiol (5 days) or daily injections with Human Menopausal Gonadotropin (Menopur)?
The hypothesis of this randomized double blind study is that the live birth rates are significantly higher after the use of atosiban prior to the embryo transfer in patients undergoing in vitro fertilization (IVF) treatment. This study aims to compare the live birth rates of IVF treatment between patients receiving atosiban and placebo prior to the transfer.
Endometrial scratching in luteal phase of a spontaneous menstrual cycle may increase pregnancy rate in women with unexplained infertility.
Estradiol is synthesized by granulosa cells of ovaries under control of follicle-stimulating hormone (FSH) and luteinizing hormone (LH). It is known that Estradiol plays a crucial role in maturation and fertilization of oocytes. Furthermore it is involved in development of secondary female sexual organs, fertility and maintenance of pregnancy. Estradiol influences these processes by binding to estradiol receptors (ER). They are ligand-depending transcription-factors. In humans there are two subtypes: ERa and ERb, which are synthetized from gene ESR1 on chromosome 6 and ESR2 on chromosome 14. Both subtypes are expressed in the ovary. Both genes are polymorph. Especially for ERa subtype several polymorphisms and mutations are known which can be linked to breast cancer, spontaneous abortions, osteoporosis and the point in time of menarche. Furthermore some studies have shown a relationship between certain polymorphisms and the risk of infertility associated gynecological malfunctions and the result of IVF treatments. Progesterone is a hormone which plays a crucial role in initiation and maintenance of pregnancy. It induces the transformation of the endometrium, which facilitates the implantation of the fertilized oocyte and supports the pregnancy. Progesterone acts by binding to its receptor. The gene for this receptor is polymorph within the population, whereas some variants seem to account for implantation failure of embryos. In the investigators study the investigators will analyse the role of ERP and PRP polymorphisms in the context of IVF treatment. The analyzed genotypes are two polymorphisms of ESRI, called Pvu and Xba, as well as a variant of ESRII, ER2. In the progesterone receptor gene a single nucleotide exchange at position +331 (G->A) plays a role. The parameters correlated with are concentrations of estradiol, progesterone and FSH, number of follicles, number of fertilized oocytes and pregnancy rate. The investigators hope to optimize established treatment protocols and to improve the chances of success of IVF treatments depending on the genotype of the patient.
This observational study attempts to investigate the potential role of serum progesterone levels on the day of hCG administration (thus, the end of the follicular phase) on the probability of pregnancy, in patients undergoing IVF with the use of GnRH antagonists and recombinant gonadotrophins. There has been evidence, that increased serum levels of progesterone are associated with a decreased probability of pregnancy after IVF. This study will attempt to explore the role of progesterone on the outcome of IVF, by closely monitoring its levels during the late follicular phase.
This is a comparison of pregnancy achievement between two GnRH antagonist protocols which differ in the timing of GnRH antagonist initiation.
In vitro fertilization (IVF) is an assisted reproductive technique to achieve pregnancy in subfertile couples of which the average success rate is only 25%. Mild ovarian stimulation treatment yields less oocytes, has less adverse effects but has a comparable clinical outcome compared to conventional stimulation treatment. There is high inter- and intra person variability in ovarian response and fertility outcome parameters after stimulation treatment and little is known about explanatory variables herefore. Nutrition and in particular folate, or its synthetic derivative folic acid, is a B-vitamin which has been widely asssociated with reproductive outcome and subfertility. Therefore, in this study we aim to investigate the influence of preconception nutrition and folic acid use on ovarian response after mild/conventional stimulation treatment and to identify biomarkers in the follicular fluid which can indicate oocyte quality and other fertility outcomes.