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. objective: 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 clini...

background: the differential efficacy between long gnrh agonist with antagonist can partly be due to the preexisting differences in the early antral follicles before ovarian stimulation. objective: to compare the effect of pretreatment by estradiol with gnrh antagonist on antral follicular size coordination and basal hormone levels in gnrh antagonist protocol. materials and methods: on cycle da...

background: polycystic ovarian syndrome (pcos) patients are prone to premature lh surge and ovarian hyperstimulation syndrome (ohss). long gnrh analogue protocol and gnrh antagonist protocol are two methods utilized for induction ovulation in patients undergoing ivf/icsi. objective: the aim of this study was to compare the effects of gnrh agonists and antagonists in pcos patients. materials and...

abstract the gnrh analogue (agonist and antagonist gnrh) changed ovarian stimulation. on the one hand, it improved chances of pregnancy to obtain more oocytes and better embryos. this leads to an ovarian hyper-response, which can be complicated by the ovarian hyperstimulation syndrome (ohss). on the other hand, the gnrh analogue can prevent the incidence of ohss: gnrh antagonist protocols, gnrh...

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 ...

the effect of short term usage of gnrh antagonist as pretreatment on superovulation in goats was evaluated. statistical analysis was performed using t-test and showed that usage of gnrh antagonist as pretreatment can improve number of recovered embryos (p0.05). this study showed that usage of gnrh antagonist can improve superovulatory response in term of embryo recovery in goats .this study sho...

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: the purpose of present study was to evaluate the role of pre-ovulatory gnrh agonist therapy on ivf outcomes in gnrh antagonist cycles. methods: in this prospective study we recruited 100 infertile women undergoing ivf cycles with gnrh antagonists. the patients were assigned to two groups: group a (the study group, n=42) were assigned for receiving hcg+triptorelin for the final oocyt...

Objective Coasting can reduce the ovarian hyperstimulation syndrome (OHSS) risk in ovulation induction cycles before intracytoplasmic sperm injection (ICSI). This study aimed to investigate the effect of gonadotropin-releasing hormone (GnRH) agonist and GnRH antagonist protocols to controlled ovarian hyperstimulation (COH) cycles with coasting on the parameters of ICSI cycles and the outcome. M...