This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Neuraxial Blockade, Subject name: Anaesthesia
[{'content': 'Which is not an ideal method of post operative analgesia? \nSelect and explain. \nA. Patient controlled analgesia, B. Continuous epidural with local anesthetics, C. Intercostal nerve block, D. Cryoanalgesia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Cryoneurolysis, also referred to as cryoanalgesia, is a medical procedure that temporarily blocks nerve conduction along peripheral nerve pathways. The procedure, which inses a small probe to freeze the target nerve, can facilitate complete regeneration of the structure and function of the affected nerve. Cryoneurolysis has been used to treat a variety of painful conditions. It is not used for postoperative analgesia.', 'role': 'assistant'}]