Ulcerative Colitis Endoscopic Index of Severity (UCEIS) versus Mayo Endoscopic Score (MES) in guiding the need for colectomy in patients with acute severe colitis.

Background: The Ulcerative Colitis Endoscopic Index of Severity (UCEIS) and the Mayo Endoscopic Score (MES) were developed as an objective method of the endoscopic severity in ulcerative colitis (UC); however, it was still unclear whether UCEIS vs MES could guide the need for colectomy in acute severe colitis (ASC). Methods: Consecutive ASC patients between January 2012 and May 2016 were retrospectively evaluated. Demographic data, previous therapy, clinical observations, laboratory parameters, medical therapy and endoscopic assessments were documented. The primary outcome was the need for colectomy during admission and follow-up. Results: Ninety-two patients were enrolled. 37 (40.2%) needed colectomy. UCEIS score is a predictor of requirement for colectomy inmultivariate analysis (OR, 3.25; 95% CI, 1.77-5.97; P < 0.001). Receiver-operator characteristic (ROC) area of UCEIS is 0.85, with a sensitivity of 60.3% and specificity of 85.5% using cut-off value of 7, which outperforms MES with the ROC area of 0.65; When UCEIS score >= 7, 80% of patients eventually need colectomy. Conclusion: UCEIS outperformed MES as a predictor for need for colectomy in ASC patients. The high probability of medical treatment failure and benefits of early colectomy should be discussed in patients with baseline UCEIS >= 7.