I am so sorry to hear about this problem ... loss of blood to that extent could cause the brain damage
, but it would have produced some active symptoms at that time such as loss of consciousness
of part of the body or part of the face, loss of tone, or something like that. In view of the fact that no such thing happened at that time goes against the problems being due to blood loss, though, as I said earlier, it IS possible.
Have his doctors determined the cause of the brain damage? What was the reason for him being on an IV line at the age of six weeks? Was he a small/preterm baby or did he have any issues in the first month of life? If the answer to any of these three questions is "yes", then the cause lies there amid your son's actual history at the time of the problem.
= Dr. Taher