Inadvertent recombinant human follicle stimulating hormone bolus instead of human chorionic gonadotrophin leads to the retrieval of competent oocytes in IVF program.

OBJECTIVE: To present a case where recombinant human FSH (r-hFSH) was accidentally used instead of hCG and resulted in oocyte maturation. DESIGN: Case report. SETTING: A tertiary infertility center. PATIENT(S): A 36-year-old woman underwent IVF for infertility problems. The couple was unable to obtain a pregnancy during the previous 2 years. INTERVENTION(S): Oocyte retrieval after a r-hFSH bolus (two vials of Gonal-F 1050 IU) instead of the routinely used hCG. MAIN OUTCOME MEASURE(S): Oocyte maturity evaluation, fertilization after intracytoplasmic sperm injection, cleavage stage, and embryo quality. RESULT(S): A total of nine oocytes were retrieved; eight were metaphase II. Three eggs were fertilized by intracytoplasmic sperm injection, and four of the remaining MII oocytes were cryopreserved. All three oocytes fertilized and developed to three good-quality embryos that were transferred on day 2. No pregnancy was obtained from this fresh transfer cycle or from transferred embryos resulting from the thawing cycle. CONCLUSION(S): A massive r-hFSH administration can lead to the retrieval of mature MII oocytes that are able to fertilize and give good-quality embryos to transfer.

Perifollicular vascularity monitoring and scoring: a clinical tool for selecting the best oocyte.

The aim of our study was to assess relationship between perifollicular vascularity and outcome of in vitro fertilization (IVF) cycles. In our study, women who received embryos originating from oocytes developed in well vascularized follicles had a statistically higher pregnancy rate than women who received embryos chosen without considering follicles of origin.