A 74-year-old man presented with abdominal pain, nausea, vomiting and fever for 2 days. He has a history of hypertension and ischemic heart disease treated with medications. On examination, he had tenderness in the right lower quadrant. Tests showed elevated white blood cell count and ultrasound revealed inflamed appendix with fluid in the right lower quadrant. The provisional diagnosis was acute appendicitis requiring an emergency open appendicectomy.