MP46-09 PREVIOUS INCONTINENCE SURGERY AND SURGICAL VOLUME PREDICT SOCIAL CONTINENCE AND SURGICAL REVISION: RESULTS OF A LARGE MULTI-INSTITUTIONAL STUDY.

circumference, 4) 100% circumference. A stricture was defined as clinically significant if it required intervention such as urethroplasty, direct visual internal urethrostomy, or dilation. Patients with less than 1 month follow up were excluded for stricture rate analysis. RESULTS: A total of 55 males with a history of AUS cuff erosion were identified. The mean patient age was 73.6 ( 9.4). The mean device age was 50.5 months (range 1-160). Of the cohort, 47 were initially implanted at our institution and 8 elsewhere. An associated infection was noted in 20 patients. Of 55 patients, 13 (24%) had a prior history of AUS erosion. Of the 55 patients, 21 were in group 1, 13 in group 2, 7 in group 3, 5 in group 4, and the degree of erosion was not documented in 9. The median follow up after erosion in these patients was 9 months. Four patients did not have sufficient follow up to assess stricture rate (less than 1 month). The median length of catheterization was 30 days after removal of the AUS. The degree of erosion did not correlate with a longer period of catheterization (p1⁄40.5). Of the patients with follow up, the overall rate of stricture in this cohort was 25%. The degree of erosion did not correlate with the risk of stricture occurrence (p1⁄40.8). However, in the circumferential erosion group (n1⁄45), 2 underwent a urethroplasty at the time of cuff removal. An infected and eroded cuff did not appear to correlate with a higher risk of stricture formation (p1⁄40.7) CONCLUSIONS: Erosion of the AUS cuff into the urethra leads to a urethral stricture in 25% of patients. However, the degree of erosion, prolonged urinary extravasation, or associated infection did not correlate with development of a urethral stricture.