If the IVF specialist can accurately detect the cause of the failure of the repeated IVF cycles, then he or she can proceed in a more planned manner during the upcoming IVF cycle.
The IVF specialist could pay more attention to the embryo transfer procedure and its schedule or emphasis on choosing healthy oocyte and sperm or check out the uterine environment for the best location of implantation and so on.
The key to a successful IVF cycle is to accurately diagnose and detect the reason for failure in the earlier cycles and choose to avoid their recurrence in the present cycle.