P394 Contribution of the CDEIS in the new therapeutic approach of Crohn's disease

Abstract Background Deep remission, currently considered the major goal in Crohn's disease (CD), as well as the emergence of the concept of treating beyond symptoms, leads that colonoscopy has become the cornerstone in assessing the severity of lesions to guide the therapeutic decision. As a result, the Crohn’s disease endoscopic index score (CDEIS) makes possible the use of a common language to standardise the reports and therefore to comply with a codified treatment. The purpose of our work is to evaluate the contribution of the CDEIS in the CD by studying the attitudes adopted by clinicians and comparing them to those that would have been appropriate by referring to the CDEIS after treatment. Methods A retrospective study spread over 5 years, collecting patients diagnosed with a CD at the gastroenterology department of Sousse. The first relapse has been studied. CDEIS after treatment was calculated. The endoscopic response was defined by a reduction of the CDEIS of more than 50% while the endoscopic remission by a score 50% (n = 72); Group 3: decrease of the CDEIS