The purpose of our study is to determine if a loop ileostomy with colonic lavage will result in better outcomes. A loop ileostomy is when a loop of small intestine is brought out to the abdomen and the colon remains in the abdomen. The diseased colon, which is preserved, is washed with a warm solution (like the solution used in a colonoscopy preparation) and then treated with an antibiotic via this ileostomy. So far, one study has been done using a loop ileostomy with colonic lavage. 42 patients who underwent this treatment were compared to 42 patients that underwent the standard of care (complete removal of the colon with end ileostomy). The 42 patients who underwent a loop ileostomy showed a significant decrease in rate of death compared to the standard of care. Also, in the study, patients who underwent a loop ileostomy had a much higher rate of reconnection of the intestine (closing the stoma). The purpose of this study is to see if a loop ileostomy with colonic lavage can treat patients with fulminant colitis with less risk of death than the standard of care.