Does quality of embryo affect implantation?

When good quality embryos are transferred, the implantation rate is higher and there is no difference in pregnancy rate. Double embryo transfers should be limited to patients with repeated implantation failure or repeated pregnancy loss.

Are day 5 blastocysts good?

A Recent meta-analysis found that day 5 blastocysts transfers have higher clinical pregnancy (CPR) and live birth rates (LBR) compared with day 6 embryos in both frozen and fresh cycles, regardless to embryo quality, in agreement with preceding retrospective studies6,7,8.

What is considered a high quality embryo?

Typically an 8A on D3 is the best grade. These embryos show that there are 6-8 evenly sized cells, with no or less than 10% fragmentation. These embryos have more uneven or irregularly shaped cells with 25-50% fragmentation. These embryos show 50% or more fragmentation.

What is the best grade of blastocyst?

Grading Day 5 Embryos Blastocyst grading is determined by: Degree of expansion based on how expanded the cavity is. This is graded on a scale of 2-6 with 6 being the most expanded. Appearance of the inner cell mass (baby-making part) which is graded with either an A, B, or C with A being the best.

Can a 5AA embryo be a girl?

The gender ratio was significantly skewed in relation to morphology. A total of 72% of blastocysts attaining the highest morphologic scores (5AA and 6AA) were found to be male, compared with only 40% of grade 3 embryos.

What is a high-quality blastocyst?

A high-quality blastocyst was defined as having a grade of at least 3BB, including 3/4/5AA, AB, BA, or BB [16, 17]. All lab operations for gametes, zygotes, and embryos were conducted by two embryologists with considerable intra- and inter-observer variability in quality control proficiencies.

Can a 4AA embryo be a girl?

That means you only have a 28% chance for a girl. Boy embryos develop quicker in the early stages, which is why there’s such a drastic difference between the two. Gender selection is nearly impossible at this stage then. I personally managed to get a girl (4AA) and a boy (5AA), so anything is possible!

Does a hatched blastocyst implant faster?

Extending culture of expanded blastocysts by a few hours to allow transfer of spontaneously hatching/hatched blastocysts gives higher implantation and pregnancy rates with no added risk of multiple gestations.