Perforated bowel is a survivable symptom of Chron's disease or diverticulitis as long as it is treated promptly. The major consideration with a perforated bowel is that the perforations allow intestinal content to flow into the abdominal cavity which presents a risk for infection. Sepsis, or infected blood, can result if the perforated bowel is not repaired with surgery, and sepsis is nearly always fatal if not treated. You can live for a few days with untreated bowel perforation, but it is highly recommended that you receive treatment quickly. Once the bowel is repaired you should be able to live normally for many years.