SIDS most likely does not exist. "Unknown cause of death" should be preferred.[1] If you review the literature, there has been a definite increase in pushback against "SIDS" instead trying to assign causes of death with known mechanisms. I can't find a great reference but there is one out there that proposes with evidence that the most prevalent actual cause of death labeled "SIDS" is accidental suffocation.

It is so emotionally charged though that there is and has been great hesitation to assign this cause of death because of the emotional effect on the parents.

[1] https://pubmed.ncbi.nlm.nih.gov/10571752/

One of my children had a serious problem right after birth with breathing (central apnea). He'd stop breathing suddenly while sleeping. If this had happened at home he likely would not have made it, but the hospital was very alert to it and after two weeks with many such episodes it suddenly clicked and then it never happened again.

If we had taken him home without knowing about the condition I'm pretty sure a 'SIDS' cause of death would have been one of the possible outcomes regardless of the actual cause (which would have been very hard to determine after the fact).

Thank god the hospital caught it!

They were really caught out by it themselves if not for an unrelated issue they would have sent us home. So luck played a huge part here. That's also two weeks that aged me a couple of years. But compared to what I saw some of the other parents there deal with we were the lucky ones in more ways than one.