Purpose: Patients with severe medically refractory ulcerative colitis commonly undergo total proctocolectomy with ileal pouch-anal anastomosis (IPAA). This surgery occurs in 1, 2 or 3 stages. Up to 50% of patients develop pouchitis, diagnosed based on various clinical, endoscopic, and histological findings. Multiple risk factors for pouchitis have been suggested, including bacterial dysbiosis, presence of pANCA titers, extra-intestinal manifestations of ulcerative colitis, use of preoperative steroids and NSAIDs. While many different therapies have been studied, antibiotics are the mainstay of treatment. Approximately 10% of patients with pouchitis develop antibiotic refractory pouchitis and require immunomodulators, biologics, and/or surgery. There are no randomized trials in the literature and maintenance of remission in refractory pouchitis remains a challenge. The aim of this study was to identify risk factors leading to the development of refractory pouchitis. Methods: A retrospective analysis was performed of patients who underwent IPAA from 2003-2010 at a single tertiary care center. The variables of pre-operative diagnosis, age, gender, Charlson comorbidity index score, and diagnosis and treatment of pouchitis were assessed. Patients were excluded if they had less than one year follow-up documented in the chart or a surgical complication leading to diagnosis of failed IPAA. Results: A total of 112 patients were included in the study (91 UC, 1 CD, 9 IC, 11 FAP). The mean age at diagnosis was 26.8 years, 59 patients were male (52.7%), and the mean Charlson score was 0.69. Pouchitis was diagnosed in 67 patients (59.8%) and all received antibiotics for initial management. Of those patients with pouchitis, 46 (68.7%) were also given probiotics, 4 (5.9%) received immunomodulators (azathioprine, methotrexate, or 6-mercaptopurine), and 8 (11.9%) received biologics (infliximab, adalimumab, or certolizumab). A total of 6 patients (8.9%) required management with pouch excision or revision. Univariate analysis identified a trend towards significance for number of stages (p=0.08) and post-operative diagnosis change to Crohn's Disease (p=0.08) for predicting such refractory disease. Conclusion: We hypothesized that certain patients may be predisposed to refractory pouchitis. While more data is needed to prove significance, the patients with more aggressive distal disease necessitating a 3 stage procedure may be at higher risk for subsequent pouchitis. This also may influence the conversion to phenotypically identified Crohn's disease. Additionally, operative techniques for the IPAA itself need to be investigated. Given the difficulties of management, further studies are needed to identify patients at risk for development of refractory pouchitis.