Dynamics of pituitary down-regulation and ovarian response to controlled stimulation in in vitro fertilization cycles

Comparison of protocols efficacy in poor responders: differences in oocytes/embryos competence with different protocols, a retrospective study

“…The standard long protocol is not a good choice in poor responders; profound suppression of ovarian function results from the direct ovarian effect (11) or extreme reduction of pituitary LH production (12). Aiming to improve ovarian response in these patients, several studies have evaluated short protocols using GnRH antagonists or GnRH agonists.…”