S.B.
Recently my son had his tonsils out - not because of sore throats or ear infections but because he had signs of sleep apnea. The ENT said that it is very difficult to diagnose sleep apnea in a child (since I worked for 4 years in a sleep center i know this is true, they toss and turn too much at night to get a good reading). However, they can tell from key symptoms - grumpy when first awakened, a lot of thrashing during the night, snoring even light snoring.
He made no promises about any connection between having my son's tonsils taken out and bed wetting but said that bed wetting is a sign they look at for sleep apnea.
Since my son had his tonsils out in December he has been dry most of the time whereas before he wet the bed most of the time.
When I told the ENT this on our follow up he said he hears that a lot but not enough to promise it, but he does believe it is connected because when the child does get to sleep he/she is sleeping so soundly they can't wake up to the signals of needing to go to the bathroom.