The study showed that the size of the embryo cohort does not affect the rate of normal embryos identified by PGD. The authors used array CGH to evaluate embryos on day 3 and day 5. The study was retrospective using data from a PGD reference lab. They studied 7753 embryos from 990 patients. Embryo Cohort Findings … Read More »
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.
Take Home Message on Embryo Quality and Frozen Transfer Cycles: Embryo quality (measured as morphology or shape) remains an important factor for selecting which embryo to transfer. Some clinics do not keep embryo quality information on their frozen embryos. Thus, they randomly transfer embryos in the frozen cycle and their success rates are not optimized … Read More »
Two studies highlight the damage done by smoking on fertility. I learned of these studies from BioNews (click here for the link to the article). Everyone knows that smoking is generally harmful, but how it harms fertility is confusing. In the this article, the study suggests a mechanism whereby the mother’s smoking habit can impair … Read More »
Genetic technologies invade every aspect of medicine. Here we find another example of a technology that could significantly assist us in identifying the embryo that will make a baby. The authors suggest measuring telomere length may be a measure of embryo health. If so, then this test may be a very valuable tool to access … Read More »
ICSI is an incredibly important technique for male infertility treatment. It turns out that once the sperm is properly placed in the egg, the sperm and egg know what to do to transform into an embryo. The technique is powerful, because only a single sperm is necessary for each egg and the sperm does not … Read More »