Does the developmental stage at freeze impact on clinical results post-thaw?
The value of cryopreserving prezygotes, pre-embryos or blastocysts for future thaw and transfer is an important consideration of every IVF program. The convergence of two factors, a higher pregnancy rate and a lower multiple gestation rate, can be managed effectively through the establishment of a successful cryopreservation programme. In this article, freezing and thawing results from pronuclear oocytes, pre-embryos, and blastocysts are compared.
Veeck
Lucinda L
LL
Weill Medical College of Cornell University, 505 East 70th Street, HT-300, New York, NY 10021, USA. lveeck@med.cornell.edu
D001755:Blastocyst / Q000473:pathology; D015925:Cryopreservation / Q000379:methods*; D003451:Cryoprotective Agents / Q000494:pharmacology; D004624:Embryo Transfer; D004622:Embryo, Mammalian / Q000473:pathology; D005260:Female; D005307:Fertilization in Vitro / Q000379:methods*; D005615:Freezing; D006801:Humans; D011247:Pregnancy; D011256:Pregnancy Outcome; D018873:Pregnancy Rate; D013048:Specimen Handling
D003451:Cryoprotective Agents