A case of oocyte and embryo vitrification resulting in clinical pregnancy.

Objective: To examine a case of clinical pregnancy following oocyte and day 3 embryo vitrification.

Design: Case report.

Setting: Huntington Centro de Medicina Reprodutiva, a private infertility clinic, in São Paolo, Brazil.

Patient(s): A 31-year-old woman, gravida 1, para 1, with polycystic ovary syndrome.

Intervention(s): In vitro fertilization with oocyte and embryo vitrification.

Main Outcome Measure(s): Clinical pregnancy defined as fetal cardiac activity on ultrasound examination.

Result(s): Transvaginal ultrasound examination, at 7 6/7 weeks, revealed a single live intrauterine pregnancy with positive cardiac activity.

Conclusion(s): Although further research is needed, this case suggests that repeat vitrification and warming of oocytes and embryos not only are possible but can result in pregnancy.