- Surgical procedures: The surgical procedures performed on the patient since diagnosis of IBD (including those performed before knowing the patient had IBD and which led to its diagnosis), the indication for surgery and the date of surgery will be recorded. An emergency surgical procedure will be considered as any surgery performed within 24 from admission of the patient to the emergency department. An elective surgical procedure will be considered as any procedure performed subsequent to the first day of admission and by the usual surgical team.