Outcome of acute severe ulcerative colitis in patients previously exposed to immunosuppressive therapy

Background and aim: We aimed to evaluate the outcome of patients with acute severe ulcerative colitis previously exposed to immunosuppressive (IMS) therapy. Methods: We retrospectively collected data from 86 consecutive patients from 2008. Early outcome was evaluated as response to steroids, rescue therapy, and colectomy rate, whereas colectomy free-survival was determined along the follow-up. Results: The overall response rates to steroids and rescue therapy was 33.7% and 90.5%, respectively, while early colectomy rate was 22.1%. Patients previously treated with IMS (n = 47) showed a trend towards lower response to steroids (25.5% vs 43.6%; p = 0.10), and a high-risk of early colectomy (29.8% vs 12.8%; p = 0.07), but a similar response to rescue therapy (87.5% vs 94.4%, p = 0.62) when compared with IMS-naive patients (n = 39). The overall cumulative probability to avoid the surgery was 67.5% and 56.6% at 12 and 60 months, respectively, regardless of previous exposure to IMS (p = 0.30). At multivariate analysis the risk of early colectomy was increased by previous IMS (OR 5.16, p = 0.017), anaemia (OR 4.26, p = 0.02), and diagnosis above 40 years (OR 5.31, p = 0.011). Conclusions: Patients previously treated with IMS showed a non-significant trend towards a worse response with steroid therapy, a satisfactory response rate to rescue therapy, and a similar probability of avoiding colectomy during the follow-up vs IMS-naive patients. (C) 2016 Editrice Gastroenterologica Italiana S.r.l. Published by Elsevier Ltd. All rights reserved.