background: to compare a flexible, multi-dose gnrh antagonist protocol with a long gnrh .agonist protocol in poor respo materials and methods: a randomized clinical trial of 70 poor responder patients (35 patients in gnrh antagonist protocol and 35 patients in long gnrh agonist protocol) was performed at royan institute, tehran, iran. both groups were given a fixed dose of human menopausal gona...

Background To compare a flexible, multi-dose GnRH antagonist protocol with a long GnRH .agonist protocol in poor respo MaterialsAndMethods A randomized clinical trial of 70 poor responder patients (35 patients in GnRH antagonist protocol and 35 patients in long GnRH agonist protocol) was performed at Royan Institute, Tehran, Iran. Both groups were given a fixed dose of human menopausal gonadotr...

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: The objective of this study is to evaluate the progesterone level (P Level) on the day of HCG triggering in GnRh agonist and antagonist protocols, and its correlation with clinical pregnancy rate and miscarriage rate. Premature luteinization during in vitro fertilization (IVF) was commonly happened before the introduction of GnRh analogues. High level of unwanted progesterone that i...

background: premature luteinization during in vitro fertilization was commonly happened before the introduction of gnrh analogues. high level of unwanted progesterone is associated with adverse pregnancy outcome and is thought to be induced by inappropriate lh elevation.objective: to evaluate the progesterone level on the day of human chorionic gonadotropin (hcg) triggering in gnrh agonist and ...

The goal of ovarian Stimulation for assisted reproductive technologies (ART) is obtaining multifollicular growth ovarian hyper stimulation syndrome (OHSS) is one of the most Severe and also potentially Life-threatening complications, which happens in 1-10% of IVF cycles. The most common risk factors which are related to OHSS are polycystic ovarian syndrome (PCOS), younger age, high preovulatory...

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: 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: based on classical two-cell, two-gonadotropin theory, in the follicle, follicle-stimulating hormone (fsh) and luteinizing hormone (lh) put on their main effects on the granulosa and theca cells. lh is essential for androgens production. androgens are used for estradiol production by granulosa cells. profound suppression of lh concentrations in some normogonadotropic patients can cau...

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...