Apparently another part of the procedure that Jaime and I are using may not be done correctly.
The technicians that do the sperm selection and injection into the egg use microscopes to look for the "best looking" sperm and use those. In our case the sperm is actually forced into the egg to fertilize it, because my vasectomy reversal wasn't complete and my sperm doesn't typically have enough oomph left to do the job itself.
This article seems to say that that may not properly isolate the best DNA payloads for fertility. It seems that it is necessary to try to find out the actual condition of the DNA itself, rather than relying on conventional visual inspection. It makes me wonder if our failure to get pregnant this last IVF cycle might be related. Are there genetic abnormalities with this batch of embryos? Should we ask the doctor to do the genetic testing she talked about the last time? Do we want to risk losing embryos just to "look"?
For "next time", there doesn't seem to be a method to check the DNA of sperm without destroying the sperm, though. So worrying will probably not do me any good.
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