MR Defecography, a Diagnostic Test to Evaluate the Pelvic Floor Motion in Patients with Dyssynergic Defecation after Biofeedback Therapy

Abstract

Background: Dyssynergicdefecation is a major cause of chronic functional constipation as a common digestive complaint. We clinically evaluated the effects of biofeedback therapy on the pe lvic floor motion indices through magnetic resonance (MR) defecography, quality of life and depression in patients with dyssynergic defecation. Methods: In this clinical trial study, among patients referring to the Colorectal Clinic of Hazrat Rasoul Hospital, 22 subjects were randomly assigned into two equal groups (n= 11) to receive either standard only or biofeedback and standard therapy. Dynamic changes of the pelvic floor were mea sured by MR defecography. During the simulated defecation, two MR defecography dynamic indices including abnormal anorectal angle change an d perineal descent were measured before and after