What was the reason for the failed implantation ?

One of our patients sent me this email.Doctor,We were hoping for some detailed response from you which would have given us some comfort as this time we are very very shocked. We believed that the use of donor egg would resolve my egg quality issue but things doesn't seem to have changed.I clearly remember in my first cycle, at the time of my ET, we had only one embryo left for transfer and which was at morula stage. You had explained the reason for low number of embryos and slow growth was due to the poor quality of my egg, which had failed to provide energy to the embryo to develop. Even when implantation had failed at that time, you had said the reason was poor quality of the egg. So, does this mean that in this cycle, the eggs which were used were also of poor quality which is why we received less number of good quality embryos and also failed implantation?Another thing which we also recollect from our first cycle is that we were worried whether it was a sperm issue for failed implantation and whether we should we go for some tests like PGD. You had explained that egg quality is generally responsible for poor embryos and that poor sperm quality do not affect embryo quality after ICSI. Hence, the requirement of any tests was also ruled out.My uterus and endometrium lining was also perfect during this cycle. So what could be the reason for failed implantation this time? This is a big question. We made the toughest decision of our lives to go with the donor eggs but still the...
Source: Dr.Malpani's Blog - Category: Reproduction Medicine Source Type: blogs