RBMOnline - Vol 14 No 1. 2007 72-79 Reproductive BioMedicine Online; www.rbmonline.com/Article/2548 on web 23 November 2006 Article Cryotop vitrifi cation of human oocytes results in high survival rate and healthy deliveries Monica Antinori graduated in Medicine and Surgery in 2001 from the University of Rome La Sapienza, Italy and then completed her residency there in 2006 in Obstetrics and Gynaecology. During the latter part of her residency she was particularly involved in clinical and research activity in minimally invasive surgery. She has actively participated in the publication of trials on male infertility and pregnancy in menopausal women. Currently she is part of the medical staff of the Assisted Reproduction Centre RAPRUI, in Rome. Her research areas are in-vitro embryology linked to clinical application, embryo implantation and hysteroscopy. Dr Monica Antinori Monica Antinori1, Emanuele Licata, Gianluca Dani, Fabrizio Cerusico, Caterina Versaci, Severino Antinori RAPRUI (International Associated Research Institute for Human Reproduction Infertility Unit) Day Hospital, Via Timavo No. 2, Rome, Italy 1Correspondence: e-mail:
[email protected] Abstract Vitrifi cation, an ultra-rapid cooling technique, offers a new perspective in attempts to develop an optimal cryopreservation procedure for human oocytes and embryos. To further evaluate this method for human oocytes, 796 mature oocytes (metaphase II) were collected from 120 volunteers. Since Italian legislation allows the fertilization of a maximum of only three oocytes per woman, there were 463 supernumerary oocytes; instead of being discarded, they were vitrifi ed. When, in subsequent cycles, these oocytes were utilized, 328 out of 330 (99.4%) oocytes survived the warming procedure.