Human Reproduction, Vol. 14, No. 6, 1650-1652,
June 1999
© 1999 European Society of Human Reproduction and Embryology
Full term delivery following cryopreservation of human embryos for 7.5 years: Case report
Center for Human Reproduction, Los Angeles, California, 18370 Burbank Blvd, Suite 301, Tarzana, CA 91356, USA
Successful pregnancy in a 44 year old woman is described following the transfer of embryos which were cryopreserved for 7.5 years. The embryos were obtained during a gamete intra-Fallopian transfer (GIFT) procedure in 1989. To our knowledge this is one of the longest published periods of cryopreservation of embryos which has resulted in a healthy baby. This report illustrates the previously presumed viability and normality of human embryos undergoing long-term cryopreservation. Additionally, it emphasizes the importance for advanced reproductive technique programmes and patients to review and update their embryo status.
Key words: delivery/embryo/extended cryopreservation/human/pregnancy
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