Researchers found that day 3 embryos biopsied for PGD implanted at the same rate as embryos from non-PGD cycles. Compared to routine IVF, their blastocyst survival rate after thawing = 87% versus 88% respectively. The implantation and clinical pregnancy rates were 35% versus 29% and 34% versus 36% respectively). The overall ongoing pregnancy rate for … Read More »
Japanese researchers explored a national database to determine whether thawed single-blast embryo transfer in natural cycles would reduce the risk of an ectopic pregnancy.
A prospective study demonstrates that frozen vitrified donor eggs yield the same outcome as fresh donor eggs in this nice prospective study. Egg freezing has been long in the development because the egg (oocyte) is particularly sensitive to the freezing-thawing process.
Ovarian cryopreservation is a technique for fertility preservation of cancer patients. About 13 live births resulted from this technique since about 1995 when the experimental technique began after research in sheep. This study involved the ovaries from 18 females with a mean age of 14.5 years for acute lymphoblastic leukemia (ALL) and 24.7 years for … Read More »
Egg freezing is a controversial issue in reproductive medicine because only relatively recently have fertility centers been able to reliably freeze eggs unlike sperm, which we have been freezing for decades. Egg freezing may find usefulness for women about to undergo cancer treatments that would otherwise destroy all their eggs. The technique may also be … Read More »
Here is a survey poll to get your thoughts on elective egg freezing. Egg Freezing is a “new” technique to store unfertilized eggs for future fertility. Banking gametes (eggs or sperm) is not new in that we have frozen sperm for decades and eggs for many years. What is new is that egg freezing has … Read More »