effectiveness of biofeedback on quality of life in patients with dyssynergic defecation disorder

background: dyssynergic defecation disorder (dd) has recognized as the main factor for chronic functional constipation. this was a debilitating disease effective on diverse aspects of physical, psychological and social functions as well as patients’ quality of life generally. modern studies show positive impact of biofeedback therapy on dyssynergic defecation. this study was evaluated the efficacy of biofeedback on quality of life in patients with dyssynergic defecation. material and methods: a total of 30 patients with dyssynergic defecation disorder visited tertiary care centers who were selected. among them, 15 subjects underwent 8 biofeedback therapy sessions as experimental group and remaining subjects were placed into control group without biofeedback intervention. both groups participated in pre-test and post-test of 36-item short form survey (sf-36) of quality of life. data were analyzed and compared by analysis of covariance (ancova). results: findings shows that biofeedback therapy was effective on quality of life patients with dyssynergic defecation ( p = 0.001) also, index effect suggested that 53% increased of qol patients with dyssynergic defecation in experimental group can be related to biofeedback therapy. also in 8 cases, results indicated that biofeedback therapy was effect on quality of life in patients with dd ( p <0.05). conclusion: given the results in this study, biofeedback is a long-term effective method to treat with limited side effects in dyssynergic defecation and patients qol.