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...

pituitary suppression by depot gnrh agonist may be excessive for ovarian stimulation. this study compares the efficacy of a single half-dose depot triptorelin and reduced-dose daily buserelin in a long protocol icsi/et. methods: a total of 182 patients were randomized into two groups using sealed envelopes. pituitary desensitization was obtained in group 1 (91 patients) with half-dose (1.87 mg)...

Background: Administration of recombinant luteinizing hormone (rLH) in controlled ovarian hyperstimulation may benefit a subpopulation of patients. However, late follicular phase administration of high doses of rLH may also reduce the size of the follicular cohort and promote monofollicular development. Materials and Methods: To determine if rLH in late follicular development had a negative imp...

background: the ability of the ovary to respond to exogenous gonadotrophin stimulation and development of several follicles is essential in assisted reproductive technology. neither age and regularity of menses nor follicular phase fsh and estradiol concentrations are reliable predictors of ovarian response. day 3 serum inhibin-b level, during induction ovulation, has been proposed as a predict...

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: poor ovarian response to controlled ovarian stimulation is one of the most important interest points in assisted reproduction. mild ovarian stimulation seems to be preferable to high dose of fsh regimens in women with a history of poor ovarian response in previous protocol. clomiphene citrate and letrozole alone or in combination with fsh have been used in mild ovarian stimulation p...

Ovarian stimulation for assisted reproductive technology is traditionally started in the early follicular phase. The essential rationale to allow timely follicle growth and oocyte pick up ensure synchronization of vitro cultured embryos with receptive period endometrium a fresh transfer cycle. Also, conventional thought suggested that recruitment happened only once around menstruation. Deeper u...

background: controlled ovarian stimulation combined with intra uterine insemination (iui) is a convenient treatment of infertility with a success rate of 11%. the clinical observation and pattern of progesterone secretion in this method is suggestive of luteal phase defect and postulated as an implicating factor of treatment failure. objective: to investigate the efficacy of luteal phase suppor...

Nevo O, Soustiel JF, Thaler I. Cerebral blood flow is increased during controlled ovarian stimulation. Am J Physiol Heart Circ Physiol 294: H3265–H3269, 2007. First published October 26, 2007; doi:10.1152/ajpheart.00633.2007.—Estrogen appears to enhance cerebral blood flow (CBF). An association between CBF and physiologically altered hormonal levels due to menstrual cycle, menopause, or exogeno...