A patient diagnosed with ulcerative colitis is admitted to the medical unit. When assessing the patient, which of these findings would be of the most concern?

Rebound tenderness is a sign of peritonitis that could be the result of rupture of the colon. It is a clinical sign that occurs during physical examination, referring to pain upon removal of pressure, not during application of pressure. Bloody diarrhea is a common finding because of bleeding lesions and anal excoriation. A temperature of 99.0 F (37.2 C) is within normal range, and chronic inflammation may keep temperatures within the high normal range or above. Borborygmi are the sounds made by air or fluids moving through the intestines.