The Impact of Pelvic Floor Physical Therapy on Bladder and Bowel Function After Obstetric Anal Sphincter Injury

IMPORTANCE: Women with obstetric anal sphincter injury (OASI) are at increased risk of pelvic floor disorders. No standard of care exists for management of pelvic floor dysfunction after OASI. OBJECTIVES: The aims of this study were to evaluate the impact of pelvic floor physical therapy (PFPT) on bladder and bowel function after OASI and to describe adherence to PFPT. STUDY DESIGN: A retrospective cohort study of women with OASI presenting at a postpartum care clinic from 2017 to 2021 was conducted. Women were grouped according to PFPT attendance. Urinary Distress Inventory 6 (UDI-6) and Fecal Incontinence Severity Index (FISI) were administered at baseline and 6 months. RESULTS: A total of 430 women with OASI presented to a postpartum care clinic, of which 137 (31.9%) attended PFPT, and 293 (68.1%) did not attend. Baseline and 6-month questionnaires were completed by 169 women: 52 (30.8%) in the PFPT group and 117 (69.2%) in the non-PFPT group. Baseline UDI-6 and FISI scores were higher in the PFPT group. Improvement in UDI-6 was not different between groups (-5.8 ± 14.9 vs -3.7 ± 10.8, P = 0.36). The non-PFPT group had greater worsening of FISI compared with PFPT group (9.8 ± 15.2 vs 1.1 ± 11.5, P < 0.001). Sixty-six percent (n = 136) of women referred to PFFT attended at least 1 session, of which 32.4% (n = 44) completed all sessions. Completely adherent women were referred to PFPT earlier (18.5 vs 28.5 days postpartum, P = 0.027). CONCLUSIONS: Women in both the PFPT and non-PFPT groups reported improvement in bladder leakage 6 months after OASI. Women who did not attend PFPT had significant worsening of bowel leakage. Early referral to PFPT in women with pelvic floor dysfunction following OASI should be considered.