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Abstract
The aim of this study was to evaluate the effectiveness of different controlled protocols of ovarian stimulation which were long, short and microdose protocols as GnRH agonist protocols and multiple dose protocol as a GnRH antagonist protocol in ICSI cycles as regard to the number of mature oocytes, number of embryos transferred, clinical pregnancy rate and cancellation rate.
Ovulation of the normal female is a complex process involving many organs. The hypothalamus pulsatile generator of reproduction, produce & secrete gonadotrophin releasing hormone which evokes the pituitary to release FSH &LH.In response to gonadotrophin stimulation, the ovaries initiate a dynamic process of steroidogenesis, which result in the formation of mature ovum ready to be fertilized. Any defect in this group of complex process results in failure of conceive or infertility which affects up to 14% of couples nowadays.