This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hernia and abdominal wall, Subject name: Surgery
[{'content': "Pascal's law is used in which technique of hernia repair? \nSelect and explain. \nA. Lichtenstein mesh repair, B. Stoppa's preperitoneal repair, C. Bassini's repair, D. Darning repair", 'role': 'user'}, {'content': "Answer: B \nExplanation: Stoppa's preperitoneal repair In Stoppa's preperitoneal repair, the expanding intra-abdominal pressure holds the mesh in place without suture fixation. According to Pascal's law, any additional pressure exeed upon an enclosed fluid mass is transmitted equally n all directions. Use of large mesh extending 3-5 cm beyond the edge of defect in all sides utilizes Pascal's law.", 'role': 'assistant'}]