The prevalence of anal incontinence in post-partum women following obstetrical anal sphincter injury

The primary objective of this study was to determine the prevalence of anal incontinence (AI) in post-partum women following obstetrical anal sphincter injury (OASI). We also assessed quality of life and prevalence of other pelvic floor symptoms. Women who had third or fourth degree OASI were asked to complete the Pelvic Floor Distress Inventory (PFDI-20) and the Pelvic Floor Impact Questionnaire (PFIQ-7). Survey response rate was 25% (n = 1,383). Average patient age was 33.4 years. Of the patients, 10.2% had a fourth degree tear, and 89.8% had a third degree tear. Prevalence of AI was 7.7% (formed stool), 19.7% (loose stool), and 38.2% (flatus). Average PFDI and PFIQ scores were significantly higher in the fourth degree tear group. The community prevalence and impact of AI have not been well-studied. Establishment of a perineal clinic and an increase in resources may help educate women and expedite treatment for OASI.