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  • Title: Functional outcome of sacral nerve stimulation in patients with severe constipation.
    Author: Ortiz H, de Miguel M, Rinaldi M, Oteiza F, Altomare DF.
    Journal: Dis Colon Rectum; 2012 Aug; 55(8):876-80. PubMed ID: 22810473.
    Abstract:
    BACKGROUND: Sacral nerve stimulation has been reported as an effective treatment for constipation. OBJECTIVE: This study aimed to evaluate the therapeutic efficacy of permanent sacral nerve stimulation on the treatment of idiopathic constipation resistant to medical and behavioral management over a median follow-up period of 25.6 (range, 6-96) months. DESIGN: A retrospective review of a prospectively maintained institutional review board-approved database was performed. SETTING: The study was performed at 2 tertiary-care European institutions with expertise in sacral nerve stimulation. PATIENTS: Patients were considered eligible if they had had symptoms for at least 1 year and if conservative treatment had failed. INTERVENTION: Patients were tested by percutaneous nerve evaluation before the procedure. If this evaluation was successful, patients underwent sacral nerve therapy with an implanted device. MAIN OUTCOME MEASURE: Patients were evaluated by means of a bowel function diary and the Wexner constipation score. RESULTS: A total of 48 consecutive patients (39 females, median age 50.0 years (range, 17-79 years) entered the study. Twenty-three patients were implanted with a permanent stimulator. On an intention-to-treat basis, only 14 of 48 patients (29.2%) met the definition of a successful outcome at the latest follow-up period (median, 25.6 (range, 6-96) months). The mean Wexner score decreased from 20.2 (SD 3.6) at baseline to 5.8 (SD 4.1) at the latest follow-up examination (p < 0.001). However, 6 of 14 patients (42.8%) were still using laxatives and/or enemas at the last follow-up. LIMITATIONS: The study was limited by the pragmatic approach necessary to evaluate the results in routine clinical practice. CONCLUSIONS: This study shows that sacral nerve stimulation has limited efficacy on an intention-to-treat basis as a routinely recommended therapy for intractable idiopathic constipation.
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