Patient Satisfaction With Long-term Sacral Neuromodulation for Fecal Incontinence: Experience From a Single Tertiary Center

BACKGROUND: Sacral neuromodulation is an effective treatment for fecal incontinence in the long term. Efficacy is typically assessed using bowel diary, symptom severity, and quality-of-life questionnaires, and "success" is defined as more than 50% improvement in these measures. However, patient satisfaction may be a more meaningful and individualized measure of treatment efficacy. OBJECTIVE: To assess patient-reported satisfaction with long-term sacral neuromodulation and compare it to the frequently applied efficacy measures. DESIGN: An observational study of a prospectively maintained database. SETTING: A single tertiary pelvic floor referral unit. PATIENTS: Data from 70 patients (68 women, median age 69 [60-74] years) were available. The median time since implantation was 11 (9-14) years. Nineteen patients reported inactive neuromodulation devices. MAIN OUTCOME MEASURES: Bowel diaries, the Manchester Health Questionnaire, and the St. Mark's Incontinence Score were recorded at baseline, after percutaneous nerve evaluation, and at the last follow-up. Patient-reported satisfaction, using a 0% to 100% visual analog scale, with treatment since implantation (overall) and in the 2 weeks preceding completion of the last outcome measures (current) were also assessed. RESULTS: Satisfaction was significantly higher in those with active sacral neuromodulation devices (75% vs 20%, p < 0.001) at follow-up. No significant relationships exist between symptom improvement using conventional measures and patient-reported satisfaction. Current satisfaction was not associated with changes in bowel diary data after percutaneous nerve evaluation. Despite improvements in the St. Mark's Incontinence Score and Manchester Health Questionnaire below the 50% improvement threshold used to define "success," patients reported high (80%) satisfaction. LIMITATIONS: Retrospective design with gaps in the available data. CONCLUSIONS: High patient satisfaction with sacral neuromodulation can be achieved; however, the response to percutaneous nerve evaluation may not predict treatment satisfaction in the long term. The change in questionnaire results, which measure the use of compensatory behaviors and quality-of-life impact, may better correspond to treatment satisfaction.