This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'A most common cause of bowel obstruction is \nSelect and explain. \nA. Malignancy, B. Vovulus, C. Peritoneal adhesions, D. External hernia', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ADHESIONS AND BANDS\xa0:\nAdhesions and bands are the commonest causes of intestinal obstruction in Western countries. In India, hernia and then adhesions are the two common causes of intestinal obstruction.\nCauses :\n\nInfection due to peritonitis, appendicitis, post-laparotomy, and other acute infective abdominal conditions.\n\nType I :\xa0Fibrinous adhesions occur during the 5 - 10th postsurgical period. It usually gets resolved completely. It is avascular and flimsy.\nType II :\xa0Fibrous adhesions. Due to lack/poor blood supply, bowel gets attached to part of peritoneum or omentum or other parts of the bowel with dense vascular\xa0adhesions to maintain blood supply. It will persist and precipitate intestinal obstruction, often-subacute and recurrent type. Adhesions due to tuberculosis are severe, dense and difficult to separate.', 'role': 'assistant'}]