Eighty-seven patients with adolescent idiopathic scoliosis were randomized to receive either a preoperative bowel preparation with bisacodyl (n=44) or no preoperative medication (n=43). The primary outcome of interest was hospital length of stay (LOS). Secondary outcomes included postoperative abdominal symptoms, abdominal girth changes, use of laxatives, and time to bowel movement. Outcomes were ...