Reporting online in the journal Urology, researchers found that 30 children and adolescents who sought treatment for bedwetting all had large amounts of stool in their rectums, despite the majority having normal bowel habits. After treatment with laxative therapy, 25 of the children (83 percent) were cured of bedwetting within three months.
“Having too much stool in the rectum reduces bladder capacity,” said lead author Steve J. Hodges, M.D., assistant professor of urology at Wake Forest Baptist. “Our study showed that a large percentage of these children were cured of nighttime wetting after laxative therapy. Parents try all sorts of things to treat bedwetting -- from alarms to restricting liquids. In many children, the reason they don’t work is that constipation is the problem.”
Hodges said the link between bedwetting and excess stool in the rectum, which is the lower five to six inches of the intestine, was first reported in 1986. However, he said the finding did not lead to a dramatic change in clinical practice, perhaps because the definition of constipation is not standardized or uniformly understood by all physicians and lay people.
“The definition for constipation is confusing and children and their parents often aren’t aware the child is constipated,” said Hodges. “In our study, X-rays revealed that all the children had excess stool in their rectums that could interfere with normal bladder function. However, only three of the children described bowel habits consistent with constipation.”
All I can tell you is that if it were my kid, based on the things I have read, I would look for another opinion on the status of the constipation issue and ask for an x-ray of the colon. It is sooooo easy to rule that out as a culprit, I'd think it would be worth the try. It is true that various things mature at different rates, and that may be possible, but if I were dealing with a bedwetting issue with a child that I already know he's had constipation issues, I would think it might be a real possible contributor.
As far as soaking through everything, how much is he drinking? Doe she have a cu toff time for fluids prior to bed? Does he get anything to drink during the night, such as a sippy or whatever?
And at night, I would wake him up to pee. There is likely a pattern here of the "earliest" time he generally wakes with a wet bed. Set your alarm for BEFORE that time & wake him & take him potty. So if he generally never wake before it's been 3 hrs, wake him at the 3 hr mark & take him to pee & then set the alarm again for 3 hrs later. It isn't fun, but it's better than changing sheets & clothes twice a night.