122 results
1. Evaluation of the variation of semen characteristics in the general population2. Evaluation of the variance of testosterone levels in the general population
To determine whether MTX can be quantified in seminal plasma and spermatozoa of MTX-naïve and chronic-MTX users, and to compare the concentration of MTX in seminal fluid and spermatozoa between MTX-naïve users and chronic-MTX users and to evaluate…
Assessing (cost-)effectiveness of home based monitoring with urinary LH tests (true natural cycle frozen embryo transfer, true NC-FET) versus hospital controlled monitoring with repeated ultrasound monitoring and hCG trigger (modified NC-FET) to…
Primary Objectives: Determine oncologic outcomes after fertility-sparing treatment in AYAs with cervical, ovarian or endometrial cancer (Q1). Determine fertility and obstetric outcomes after fertility-sparing treatment in AYAs with cervical, ovarian…
We aim to investigate how chromosomal mosaicism affects development of the different embryonic and extra-embryonic tissues of the peri-implantation blastocyst and early post-implantation embryo to understand why some mosaic embryos can continue…
Primary Objective: The primary objective is to study clitoral volume changes during sexual arousal in premenopausal women compared to postmenopausal women.Secondary Objective(s) are: To study whether there is an association between feelings of…
To determine the effectiveness of nutritional supplement Impryl® in men of infertile couples on ongoing pregnancy rate, with or without assisted reproduction technology (ART).
Measurement and characterization of contractions in a non-pregnant uterus by noninvasive electrophysiological measurements of the uterine muscle activity using a small electrode matrix placed on the abdomen. Simultaneous vaginal ultrasonography…
The primary aim is to investigate the effect of neuromodulation (via UCon) on the symptoms of patients with PGAD. The hypothesis we want to test is whether neuromodulation of the DGN reduces the severity of symptoms of PGAD.
In this project, we hypothesize that presence of genetic variants associated with earlier age of natural menopause might be involved in diminished responsiveness of the ovaries to exogenous FSH stimulation during IVF treatment. Furthermore, we aim…
To study if a blended personalized periconception lifestyle care approach aimed at women with a high risk for pregnancy complications who are contemplating pregnancy or already pregnant (*12 weeks) can significantly reduce Lifestyle Risk Score.
In view of this uncertainty in which current practice in IVF is applied in *older* women, we propose a nationwide randomized trial comparing IVF with natural conception.
Objective of the study is to investigate whether couples with unexplained subfertility and a good prognosis have a significantly higher probability of naturally conceiving an ongoing pregnancy within six months if they are offered internet-based sex…
To evaluate the long-term effects of GH-therapy on metabolic profile and risk factors for cardiovascular diseases in adults (aged 25-35 years) born SGA and compare this with non-treated adults born SGA and with adults born AGA.
To determine whether blastocyst stage embryo transfers improve the cumulative live birth rate compared with cleavage stageembryo transfers in IVF/ICSI treatments
The aim of the study is to evaluate the effect of a laparoscopic niche resection in patients with secondary unexplained subfertility or failed IVF in comparison to expectant management on fertility, pregnancy outcome and postmenstrual spotting. Cost…
To investigate if the use of different stimulation protocols / GnRH-analogues affects embryo developmental kinetics after IVF treatment. We hypothesize that GnRH analogues differentially affect embryo development through differences in follicular…
By means of this study we want to make statements regarding the effects of (high dose) radioiodine on male fertility, depicted by various fertility parameters (serum endocrine markers (LH and FSH), semen analyses and (conceived) pregnancy (outcomes…
To determine which insemination technique in AID (IUI or ICI) is more (cost) effective in terms of ongoing pregnancy leading to a live birth.
The primary objective is to test the hypothesis that endometrial scratching in the cycle preceding controlled ovarian stimulation in women with implantation failure (defined as failure to achieve an ongoing implantation after having completed a full…