Abstract

ZAPATA, Elio et al. Inducción de ovulación en pacientes bajas respondedoras en fecundación in vitro: microdosis de acetato de leuprolide vs priming de estradiol. Rev Obstet Ginecol Venez [online]. 2017, vol.77, n.1, pp.21-29. ISSN 0048-7732.

Objective: To compare microdose leuprolide acetate protocols and Estradiol Priming. Methods: Retrospective study of 115 low-responding patients (according to Bologna Criteria), evaluated at UNIFERTES from January 2010 to December 2012, who underwent controlled ovarian hyperstimulation as per Microdose leuprolide acetate protocol or Estradiol Priming Protocols. Ovarian induction consisted of a set standard with gonadotropins, 450UI/day recombinant follicle-stimulating hormone + 150UI/day Human Menopausal Gonadotropin; performing an ovulation trigger shot with 10,000UI urinary human chorionic gonadotropin when obtaining 2 to 3 follicles of 17-18mm diameter. Follicular aspiration is performed with double lumen needle, 35 hours from trigger shot with in vitro fertilization in sequential media, and embryo transfer on day 3. Luteal phase support consisted of 600mg/day micronized natural progesterone and 4mg/day of estradiol valerate. Quantitative pregnancy test was carried out at fifteen days and embryo cardiac activity validation at one month. The following are compared: cancellation rate, stimulation days, number of aspirated oocytes, rate of clinical pregnancy by transfer and abortion rate. Results: 115 patients were included: 69 underwent microdose leuprolide acetate protocol flare and 46 underwent estradiol priming. There were no statistical differences between both protocols with regards to: number of aspirated oocytes, rate of clinical pregnancy by transfer and abortion rate. Stimulation days and therefore, gonadotropins total dosage was greater with microdose leuprolide acetate protocol. Conclusions: Even though there were no significant statistical differences between both protocols, estradiol priming entails greater patient’s wellbeing, since it requires less stimulation days and less gonadotropin total dosages.

Keywords : Low reserve; Low-responding; Stimulation Protocols; Microdose Leuprolide Acetate Protocol; Estradiol Priming.

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