The aim of this study was to make a conclusion about aplicability of two differnet gonadothropins in COS (rFSH versus HP-hMG). The primary conclusion for the success as a result of COS are the mean number of retrived oocytes, mature oocytes, fertilization rate, mean number of quality embrios, and criopreverzed embrios. The secondary conclusions were clinical pregnancy rate and delivery rates. Methods: The study was a retrospective casecontrol study,. A total of 1238 fresh, non donor, IVF cycles with COS were analyzed, but to minimize the bias, only the first cycle for each patient below 40 yaears old, in that period was analyzed. This selection composed the group of respondents that was analyzed which in total amounted to 760 patients.( rFSH = 422, HP-hMG = 338). The patients underwent COS by long luteal protocol using two differnt inducers of COS (rFSH and HP-hMG). Results: The average starting dose of rFSH used was significantely lower (152.7}41.1IU), whereas with HMG it was (228.8}68.7 IU, p=000000). The average number of IU gonadothropin used in therapy, statistically highly is significantly lower when r- FSH is used as an inducer. (1639.2 } 476.9 IU, rFSH vs 2356.4 } 955.1IU, HPhMG, p
Key words: Controled ovarian stimulation (KOS), rekominant folikulostimulative hormon (rFSH), high purity human menopausal gonadothropin (HP-hMG), intracitoplasmic sperm injection (ICSI), retrived oocytes.
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