background: gnrh agonist and antagonist were developed to control the premature release of lh surge. there is some difference between two protocols. objective: we compared the outcome of frozen-thawed embryo transfer in infertile women who used gnrh agonist or antagonist protocol for previous coh cycle and evaluation of any adverse effect of gnrh antagonist on oocyte and embryo. materials and m...

Background: General concern is that the pregnancy rate is higher with GnRH-agonist as a protocol of pituitary suppression. GnRH-antagonist protocol provides a shorter period of administration and an easy flexible protocol. In this study, the outcomes of GnRH agonist and antagonist in ICSI cycles are compared in normo responder patients. Materials and Methods: In this randomized clinical trial, ...

background: there is no doubt that luteal phase support is essential to enhance the reproductive outcome in ivf cycles. in addition to progesterone and human chorionic gonadotropin, several studies have described gnrh agonists as luteal phase support to improve implantation rate, pregnancy rate and live birth rate, whereas other studies showed dissimilar conclusions. all of these studies have b...

BACKGROUND GnRH agonist was recently suggested as a novel luteal-phase support that may act at different levels, including the pituitary gonadotrophs, the endometrium and the embryo itself. This prospective randomized study evaluates the effect of GnRH agonist administered in the luteal phase on ICSI outcomes in both GnRH agonist- and GnRH antagonist-treated ovarian stimulation protocols. MET...

background: determination of oocyte fertilization and embryo quality are one of the most important purposes in art cycles. follicular fluid provides an important microenvironment for development of oocytes and some biochemical characteristics of the follicular fluid, such as pregnancy-associated plasma protein-a (papp-a), may play an important role in prediction of success rate of art. objectiv...

background: since increased lh in the early follicular phase in pcos patients especially in gnrh antagonist protocol could be associated with reduced oocyte quality and pregnancy and impared implantation. the current study was conducted to determine art outcomes in gnrh antagonist protocol (flexible) and long gnrh agonist protocol and compare them with adding gnrh antagonist in gnrh antagonist ...

background: gnrh agonist administration in the luteal phase has been suggested to beneficially affect the outcome of intracytoplasmic sperm injection (icsi) and embryo transfer (et) cycles. this blind randomized controlled study evaluates the effect of gnrh (gonadotropine releasing hormone) agonist administration on icsi outcome in gnrh antagonist ovarian stimulation protocol in women with 2 or...

BACKGROUND To test if early-cleavage was a strong predictor of pregnancy in patients receiving either a GnRH agonist long protocol or a GnRH antagonist protocol for in-vitro fertilization treatment (IVF) and intracytoplasmic sperm injection (ICSI). METHODS This retrospective study included 534 patients undergoing a fresh cycle of oocyte retrieval and the day-3 embryo transfer (from 22 to 46 y...

In an attempt to examine whether body mass index (BMI) may influence IVF outcome in patients undergoing COH with either GnRH-agonist (agonist group) or GnRH-antagonist (antagonist group), we studied 799 IVF cycles: 481 in the agonist group and 318 in the antagonist group. In patients with BMI >25 kg/m(2), COH with either GnRH-agonist or GnRH-antagonist achieved a comparable outcome; whereas in ...

Background: To compare the effect of GnRH agonist administration with vaginal progesterone on serum progesterone in Luteal phase in control ovarian hyper stimulation and intrauterine insemination cycles Materials and Methods: In this clinical trial, 242 infertile patients because of UEI (unexplained inferetility candidate for ovarian stimulation and intrauterine insemination reffering to infert...