Abstract
Biofeedback therapy was performed in 13 patients with encopresis using newly devised computerized equipment. The patients were children, aged 6 to 11 years, who had not responded to trials of conventional therapy with a mean follow-up period of three years and two months. The biofeedback therapy was effective in 12 of the 13 patients after one course of therapy. This positive results was attributed to the computerized equipment. The patients could more easily recognize how to squeeze their anal sphincters after seeing a colored ellipse representing sphincter pressure on a monitor. The results of anorectal manometry and electromyography (EMG) showed that biofeedback therapy improved the voluntary sphincter function and rectal sensation. Therefore, biofeedback therapy might be effective in patients with encopresis whose sphincter functions are intact.
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