Blastocyst culture is medical advancement in which embryo is grown in laboratory for about a week and now it is kept only for two to three days. This time period enables the embryo to grow and reach up to the blastocyst stage as far as embryo development is concerned. There has been great improvement of nutritive solutions that actually support the growth of embryo and it is now widely used in clinical treatments as well.
Embryo in blastocyst stage is quiet effective and it is ball of cells of approximately 100-125 cells. If you ask about its size, it is not much bigger and near around 0.5 mm. Embryo in this stage is then transferred to the uterus on 5th or 6th day. Blastocyst culture is basically regarded as an alternative method to treat infertility. It is also considered as effective way to achieve the pregnancy after embryo transfer.
After two blastocyst stage embryos have been transferred, it increase the chances of pregnancy for almost all patients near about 25-30% (for 2 and 3 day embryos) and up to 50% (for 5 and 6 day embryos). These embryos first tested in laboratory and transferred to patient so that she can easily achieve the pregnancy.
Embryos in blastocyst stage imply that they are in progressive development stage and there is much lesser chances to fail in this stage. However, there may a little chance that pregnancy may not occur, due to some other problems. There may be chances that patient do not get any embryos in transfer in case when embryos do not reach to blastocyst stage.
It is reported that 33% of patients who begin with blastocyst culture do not have embryos that reach up to the blastocyst stage and thus no embryo transfer. In order to minimize this risk, there are specified laboratories that monitor your embryos and after detailed analysis of embryos laboratory opines about embryo transfer.
If you have transferred two blastocysts, then it may increase the chance to have twins or identical twins and therefore, you have to discuss with Repromed doctor for how many embryos to be transferred. If you are going with embryo transfer on 2nd or 3rd day, then remaining embryos are frozen and may also get stored for later transfer. Further, because lesser number of embryos grow to blastocyst stage, there are few number of embryos that can get stored.
If you are thinking over to go for blastocyst culture, then you need to first consult with specialist doctor whether you are suitable for this way to achieve the pregnancy. You may be the suitable one for this embryo development and implantation, if you have more than 3 stimulation cycles and do not get preganant, more than 40 years old, and want to receive single embryo, then you may simply go to have this way for getting pregnancy and have child.