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': 'Hernia that is least likely to strangulate is - \nSelect and explain. \nA. Femoral hernia, B. Direct inguinal hernia, C. Indirect inguinal hernia, D. Umbilical hernia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: "As the neck of the sac is wide direct inguinal hernias do not often strangulate".\n\nA hernia is said to be strangulated when the blood supply of its content is seriously impaired.\nMost constricted part of the hernia is its neck.\nTherefore strangulation develops in hernias in which neck is constricted.\nFemoral hernias have the highest rate of all strangulated hernias (5-20%) because the neck of a femoral hernia is very narrow.\nIndirect inguinal hernias do not strangulate as often as femoral hernias but strangulate more than a direct hernia.\nIn umbilical hernia strangulation varies with age -\n\nIn infants the hernias closes spontaneously so there is no chance of strangulation.\nIn adult strangulation is a frequent complication.', 'role': 'assistant'}]