Hello, how are you all, let’s now watch the second part of the videos on everything that has to do with in vitro fertilization and the assisted reproduction laboratory. We already saw from the capture of eggs, we also saw how sperm are trained and we saw in vitro fertilization as it is; the intracytoplasmic sperm injection technique and now we are going to see what happens from the in vitro fertilization and the five-day culture and then transfer to the future mother.
In a previous video, Dr. Monsalve already taught us the development of the embryo up to 9 months, so now we are going to see how this process and this evaluation are carried out from fertilization to day 5 of embryonic development. We must be careful in places where they want to put or transfer 3, 4 embryos that we do not know how they were evaluated day by day. Remember that quality is preferable to quantity, perhaps in other places they think or you are made to think that by placing many embryos you will have a greater probability of getting pregnant, but that is not necessarily the case, we are going to show you here in the video how there are embryos of much better quality than others and that those have a greater chance of generating a pregnancy, than if we put 6 or 7 of others that we do not know their correct evaluation to 1 or 2, for example in this case we are going to see which would be the best, the most suitable, the optimal.
The conventional evaluation of embryos without Primo Vision is approximately every 24 hours, so after ICSI or IVF we have to evaluate fertilization, fertilization as it is, where we have to observe pronuclei, we have to observe certain characteristics that tell us that everything is normal, that does not have three nuclei for example, because we discard those, we know them as triploids and on day 2 for example we can already evaluate the first embryonic division where there would have to be four blastomeres which are the same cells that each embryo that is born has. So it divides exponentially each time: 2, 4, 6, 8 blastomeres. On day 3, for example, we will have 8 blastomeres, on day 4 another process called morula begins, where there is compaction between the blastomeres, they come together and cell differentiation begins for what we know today as a blastocyst. Even on day 5 when we already obtain blastocysts we need to classify them to know which are the best. We have characteristics: Grade 1, grade 2, grade 3 and in this way know which ones are optimal and discard them.