Active clinical trials for "Infertility, Female"

Anti-Mullerian Hormone (AMH) is produced only in small ovarian follicles with quite stable levels during the cycle. There is not yet sufficient data to inform couples undergoing IVF about the effect of ovarian stimulation on the levels of AMH due to the increasing size of follicles and chances of success of the method.

A randomized controlled trial to evaluate whether pretreatment with myo-inositol can lower testosterone levels and improve clinical outcomes in hyperandrogenic PCOS patients undergoing ART

The aim of this randomized controlled trial is to compare the efficacy of oral dydrogesterone vs. micronized vaginal progesterone for luteal phase support in frozen-thawed embryo transfer cycles.

This study evaluates the effectiveness of acupuncture on pregnancy success before embryo transfer in IVF treatment in female infertile patients. Half of participants will receive acupuncture sessions before embryo transfer, while the other half will not receive.

Uterine contraction has a negative impact on implantation and pregnancy rates. Inhibition of oxytocin receptors decreases uterine contraction frequency both on pregnant and non-pregnant women. Atosiban has been studied as an oxytocin antagonist to decrease uterine contraction frequency in order to increase implantation and pregnancy rates in assisted reproduction. Previous studies have studied 37,5mg total dose which was used both before and during embryo transfer, and found atosiban to be effective in increasing implantation and pregnancy rates. We aim to use a single dose of 6,75mg atosiban before embryo transfer, in order to decrease the dose and cost and possibly introduce a simpler protocol. Our study will also be the first randomized clinical study which investigates the effect of atosiban on frozen-thawed embryo transfer cycles.

Clomiphene citrate has been widely used for treatment of infertility for decades. Although its anti-estrogenic effects leads to low pregnancy rate, clomiphene citrate is still a first-line treatment for ovulation induction because of its simple usage, low prices, no injection and low risk of ovarian hyperstimulation syndrome. Clomiphene citrate shows high affinity with estrogen receptor, which inhibits endometrial proliferation, inevitably leads to a decline in endometrial receptivity, thus affecting the success rate of IVF. In that case, use clomiphene citrate for ovulation induction is lost more than gained based on fresh embryo transfer. But recently, some researchers have proposed to extend the time from ovulation induction to embryo transfer, and the increased level of estradiol can replace clomiphene citrate to combine with the receptor, so that the uterine environment is more conducive to pregnancy. Therefore, use clomiphene citrate based on vitrification of embryo maybe a good way for treatment of infertility. At present, using frozen embryo transplantation after ovulation induction by clomiphene citrate is a common treatment, but few research has mentioned the best time for embryo implantation. The investigators research is to find the most appropriate time for frozen embryo implantation after using clomiphene citrate for ovulation induction.

Agonist triggering in controlled ovarian stimulation protocols is being used during last years (among high responder patients to avoid OHSS). Indeed, agonist triggering is more physiologic than HCG triggering. Investigators propose to compare the effectiveness of both types of trigger among three different subsets of patients: Poor responders. Normo-responders High responders Comparing both the number and the quality of achieved oocytes.

In this study, the investigators will assess the efficacy of growth hormone co-stimulation to GnRH antagonist regimen in poor responders to COH for IVF.

Adequate growth of the endometrium is crucial for implantation. Accordingly, the pregnancy success rate of patients with a thin endometrium is low. Furthermore, there is a little information about the factors responsible for impaired endometrial growth in patients with a thin endometrium. The researches have revealed that nitric oxide (NO) release can cause relaxation of vascular smooth muscle through a cyclic guanyl monophosphate (cGMP)-mediated pathway. Sildenafil is a type 5-specific Phosphodiesterase inhibitor that augments the vasodilatory effects of NO on vascular smooth muscle by preventing the degradation of cGMP and could improve blood flow and endometrial thickness. This study is designed to evaluate the effect of vaginally administered sildenafil suppositories on IVF/ICSI outcome of infertile patients with repeated IVF/ICSI failures.

In this study the investigators will try to discover whether there is a difference for any of the stimulation preparations - recombinant FSH + recombinant LH (pergoveris & luveris) vs. human menopausal gonadotropin (menopur) during GnRH-antagonist cycles in the meaning of androgenic hormones profile. The study question is whether using recombinant LH will result in different follicular hormonal milieu, serum endocrine profile or IVF outcomes than using highly purified urinary gonadotropins with hCG mimicking LH activity.