Day 5 transfer of vitrified 2 PN embryos
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walkeai - November 2

My question is if the thaw time and start of 2PN embryo growth delays the growth time of embryos when compared to fresh embryos?
I had 5 2PN embryos thawed, and development over next 5 days was continual but delayed-all were at 3 cells 24 hrs. after thaw, and at 72 hrs. post thaw ('Day 4') the two best were at 7 cells. Day 5 of tranfer I had 2 morula transferred (chose this rather than waiting one more day to see if either became blasts). Embryologist said they were good quality (little fragmentation) and eluded to the fact that it was not uncommon for thawed embryos to trail fresh in development.
Does this seem normal that they were at this point on Day 4, any truth to the slowed growth b/c of vitification?
Based on what I have shared, is there a good chance of atleast one of the embryos developing into a blast as growth was slow from the start?

 

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