My wife has had an ileostomy for years with a Koch pouch. Several times in the past couple of years she's had a problem with thick feces causing a blockage. Twice she's been hospitalized for treatment and nearly had to have surgery. If she'd had the surgery, the Koch pouch would've been removed and she'd have had to have a bag again, which she doesn't want. What could be causing her thick fecal matter and what suggestion do you have to prevent the problem. So far prune juice seems to be the only thing to work. Fiber seems to thicken it further. HELP!