View clinical trials related to Ovarian Stimulation.
Filter by:Recently, in patients with a suboptimal ovarian response, a study of the role of adding a single dose of GnRH agonist to a standard dose of hCG to initiate final oocyte maturation has also been studied. Griffin et al. (2014) reported that in patients who had more than 25% immature oocytes in their previous IVF cycle, the use of dual stimulation could increase the number of mature oocytes. Since studies in this field are limited, the researchers decided to design a clinical trial to investigate the effect of adding a GnRH agonist to a standard dose of hCG to initiate final oocyte maturation in patients with a sub-optimal ovarian response.
This study aims to study the efficiency of using a single injection of Corifollitropin alfa for ovarian stimulation by initiating administration late and without further administration of follicle-stimulating hormone after the 7th day of stimulation compared to conventional ovarian stimulation using Corifollitropin alfa (drug administration 5 days after cessation of hormonal contraceptive and supplementation with follicle-stimulating hormone daily administration from the 8th day of stimulation). This a controlled randomized clinical study and 180 patients will be recruited (90 per arm) and the primary study outcome is the number of obtained oocytes.
The aim of this study was to evaluate the effect of dehydroepiandrosterone supplementation on in vitro fertilization performance and outcome among poor-responder patient.
In-vitro fertilization (IVF) of human oocytes followed by the replacement of embryo in the uterine cavity has become a well established treatment for female infertility attributable to damaged fallopian tubes, endometriosis or unexplained causes where alternative forms of therapy have failed. The most commonly used protocols of follicular stimulation now employs follicle stimulating hormone (FSH) and long-acting agonists of gonadotropin releasing hormone (GnRH) to prevent the occurrence of a mid-cycle luteinizing hormone (LH) surge and to ensure the induction of well-synchronized larger cohort of ovarian follicles. The results of a number of studies have demonstrated that in the majority of clinical situations, FSH administration alone is sufficient to achieve successful follicular development. A study had shown that in subjects receiving recombinant human-follicle stimulating hormone (r-hFSH) and recombinant human-luteinizing hormone (r-hLH), pregnancy rates were similar in the younger and older age groups, however, in women receiving r-hFSH alone, there was a significant decline in pregnancy rates for women 35 and older. This particular study also went on to show that the subgroup of women 35 and older, may benefit from supplementary r-hLH. A number of studies have been conducted to assess the safety and efficacy of r-hLH administered concomitantly with r-hFSH in the presence of developing follicles to reduce the rate of growth of intermediate and small follicles while allowing the dominant follicle to continue to progress. This was a Phase III, open-label, multicentre study to evaluate safety and efficacy of addition of Recombinant Human-Luteinizing Hormone (Luveris) to a standard assisted reproductive technologies (ART) protocol.
Evaluate the effectiveness of adding lutropin alfa (recombinant human luteinizing hormone [r-hLH]) in the middle of the follicular phase compared to no addition, in infertile women at risk of poor response stimulated with follitropin alfa (recombinant Follicle-Stimulating Hormone [r-FSH]) under Gonadotropin Releasing Hormone (GnRH) antagonist in vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI), in the number and quality of oocytes, follicular development, fertilization oocyte, embryo quality, and pregnancy rate.
To analyse the impact on cycle outcome of LH supplementation in ovarian stimulation controlled with a GnRH antagonist in two ages groups: patients upto 35 years old, and patients aged between 36 and 39 years old.
Objective: To compare the efficacy of using mild ovarian stimulation protocol and conventional stimulation protocol in IVF outcome. Design: Prospective randomized trial Setting: University IVF setting. Patient(s): The study compromised a total 200 subinfertile couple that women had regulary menstruation. Intervention(s): Patients were randomized to treatment clomiphene citrate, gonadotropin and GnRH antagonist (100 patients) or GnRH agonist and gonadotropin ( 100 patients). Main outcome measure: Clinical pregnancy rate. Key Words: clomiphene citrate, GnRH agonist, GnRH antagonist, in vitro fertilization, pregnancy rate.
Exploratory study assessing the effect of three gonadotrophin protocols on Controlled Ovarian Stimulation (COS) parameters and IVF outcome in oocyte donors undergoing GnRH analogue (long protocol). 1,028 donors were randomized in three groups: Group I (n= 346) only r-FSH, Group II (n= 333) only HP-hMG and Group III (n= 349) r-FSH plus HP-hMG. IVF outcome of 1,059 oocyte recipients was compared.
Failure to respond to controlled ovarian hyperstimulation (COH) is still a major concern in assisted reproduction and there is no consensus on the ovarian stimulation choice regime for poor responders. Aim: To evaluate and compare the efficacy of a microdose GnRH agonist flare (MF) and a GnRH antagonist/letrozole (A/L) protocols in poor responders undergoing in vitro fertilization (IVF). Methods: One hundred eighty poor responder patients will be randomized to an ovarian stimulation protocol with either a MF or a letrozole and high dose FSH/hMG and flexible GnRH antagonist protocol.
A randomized controlled trial comparing the ongoing pregnancy rate (primary end-point) in 280 patients undergoing IVF/ICSI after stimulation with hp-hMG or rFSH controlled with a GnRH antagonist. Non significant differences were observed between hp-hMG and rFSH in terms of the ongoing pregnancy rate per started cycle (35.0% vs. 32.1%; p=0.61); R.R: 1.09 (95% CI: 0.78-1.51; Risk Difference: 2.9%). No differences were observed for implantation, clinical pregnancy and pregnancy loss rates. Patients receiving rFSH obtained more oocytes (14.4 ± 8.1 vs. 11.3 ± 6.0; p=0.001). Estradiol was higher at the end of stimulation in the hp-hMG group, while Progesterone was higher in patients stimulated with rFSH.