A 1- and 2-year follow-up study of bowel sound biofeedback as a treatment for irritable bowel syndrome.

Five patients initially treated with bowel sound biofeedback were assessed at 1- and 2-year follow-up. Although variable results were reported, subjects who improved to a clinically significant extent at posttreatment maintained their improvement through 1-year and in some cases 2-year follow-up. In light of these results, this form of treatment may prove effective for some patients in the long term.