BACKGROUND The purpose of this study was to evaluate the use of the modified natural cycle (MNC) for IVF in poor responders as a last resort prior to oocyte donation. METHODS Thirty-two patients with a regular menstrual cycle, FSH levels on day 3 of the cycle >12 IU/l and one or more failed IVF cycles with five or fewer cumulus-oocyte complexes (COCs) retrieved were included in this prospecti...

Ovarian stimulation increases the risk of ovarian torsion. During an in vitro fertilization (IVF) cycle, the effects of ovarian torsion on retrieved oocytes and subsequent pregnancy chances are not clear. Moreover, no cases of ovarian torsion occurring following oocyte retrieval but prior to same-cycle embryo transfer have been reported. Such cases present a clinical dilemma with respect to opt...

background: gnrh agonist administration in the luteal phase has been suggested to beneficially affect the outcome of intracytoplasmic sperm injection (icsi) and embryo transfer (et) cycles. this blind randomized controlled study evaluates the effect of gnrh (gonadotropine releasing hormone) agonist administration on icsi outcome in gnrh antagonist ovarian stimulation protocol in women with 2 or...

The present study examined whether the rates of oocyte maturation, fertilization and development, as well as pregnancy rate could be improved by human chorionic gonadotrophin (HCG) priming 36 h before immature oocyte retrieval in patients with polycystic ovarian syndrome (PCOS). Immature oocyte retrieval was performed on day 10-14 of the cycles and patients were randomly allocated either to be ...

Techniques of oocyte retrieval have progressed from laparoscopy to transvaginal follicular aspiration under ultrasonographic control. This highly efficient method, routinely used nowadays, is not free of complications. We present a case of a ureteral lesion secondary to vaginal ultrasound follicular puncture for oocyte recovery in in-vitro fertilization. Despite the surgical procedure to reimpl...

Uterine contractility decreases at the time of blastocyst transfer Dear Sir, Fanchin and co-workers (Fanchin et al., 2001) should be congratulated for publishing a very well written paper on the role of uterine contractions in assisted reproduction. They provide convincing evidence that uterine contractility at the time of theoretical blastocyst transfer (7 days after HCG injections or 5 days a...

In this preliminary report, we describe a new technique involving the same-day transfer of activated oocytes to the uterus after intracytoplasmatic sperm injection (ICSI). The technique, termed activated oocyte transfer (AOT), offered to 19 couples, yielded a pregnancy rate per cycle of about 30%, equivalent to traditional in-vitro fertilization (IVF) and ICSI in a laboratory setting. AOT is pe...