[Influence of the high peak serum estradiol on the outcome of in vitro fertilization cycles].

Background: For the use of assisted reproductive technologies of high complexity (IVF-ET and ICSI) is essential to proper ovarian stimulation with recombinant FSH drugs menotropins, as well as the use of GnRH analogues.

Objective: To correlate serum estradiol level on day 10th with the outcome of in vitro fertilization cycles.

Material And Method: Retrospective study of 523 IVF cycles, selected and analyzed from 2005 to 2009.

[High concentrations of serum estradiol in assisted reproduction].

Objectives: To analyze the influence of the levels of estradiol on the day of HCG in the pregnancy rate (PR) of ICSI and oocyte donation.

Study Design: Retrospective, comparative.

Material And Methods: 333 patients underwent ICSI and 66 in oocyte donation were included dividing them according to the level of estradiol: a) < 1,000 pg/mL, b) 1,001-3,000 pg/mL and c) > 3,000 pg/mL.

[Prognostic values of oestradiol/oocyte rate in ICSI patients].

Objectives: To analyze the pregnancy rate in women who underwent Intracytoplasmic Sperm Injection (ICSI) program depending of the oestradiol/oocyte index.

Study Design: Retrospective, comparative.

Material And Methods: 332 patients were included.

[Comparison of the results of an assisted-reproduction program related with the day of follicular aspiration].

Unlabelled: The proper time for the oocyte retrieval allow us to obtain good quality oocytes In assisted reproduction techniques, improving fertilization and pregnancy rates. The follicular aspiration has been done by vaginal ultrasounds when we can see at least 3 follicles > or = 16 mm diameter.

Objective: To compare oocyte quality, fertilization and pregnancy rate-according to the day of the follicular aspiration.