[Polycystic ovary syndrome: is there a rise in the prevalence?].

Objective: To determine the prevalence of polycystic ovary syndrome (PCOS) according to the three major diagnostic criteria previously described in an unselected group of women from Spain and to identify the most common phenotypes of the disease.

Material And Method: An observational, transversal prevalence study was carried out between July 1 2014 and October 31 2014. All participants received a questionnaire and underwent a physical and trans-vaginal ultrasound examination.

[Proteomics and PCOS: Is it here the missing link? Literature review].

Polycystic ovary syndrome (PCOS) is known as a common gynecologic and endocrinology disease with multiple short and long-term consequences. It is one of the most common causes for hyperandrogenism and anovulation, increases the risk for metabolic syndrome, type 2 diabetes and cardiovascular disease. Its etiology remains unclear.

[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 GnRH agonists and antagonists in an ovular donation program].

Introduction: GnRH agonists and antagonists are utilized for avoiding premature ovulation in assisted reproductive cycles, (ART) this retrospective study was designed to compare both treatments in controlled ovarian hyperstimulation (HOC) in oocyte donors.

Material And Methods: Between Jan99 and Mar03, 141 oocyte donors underwent ART receiving either 0.25 mg daily of a GnRH antagonist (Cetrorelix) from day 6 of stimulation (51 patients) or a long protocol with a GnRH agonist (Leuprolide acetate) (90 patients.

[Methodology in gynaecological clinical research].

Every day the number of published articles in the world wide literature is increased; unfortunately, lot of them lack of a proper research-related methodology and therefore the conclusions might be of less scientific value. Clinicians need to develop their professional exercise based on scientific knowledge and so it is imperative to be familiar with research-related methodology. The present paper offers some tips in order to facilitate the reading and correct interpretation of clinical research.

[Influence of sperm morphology on results of intrauterine insemination].

Objective: To determine the influence of sperm morphology, according to WHO criteria, on pregnancy rates of couples who were submitted to intra-uterine insemination (IUI).

Material And Methods: Retrospective study that included 787 IUI cycles performed in the Instituto para el Estudio de la Concepción Humana in Monterrey, Mexico, from January to December 2002. Main diagnosis were anovulation, male factor, endometriosis, and cervical factor.