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: Anaesthesia
[{'content': 'Which of the following is NOT an intermediate acting muscle relaxant? \nSelect and explain. \nA. Cisatracurium, B. Rocuronium, C. Mivacurium, D. Vecuronium', 'role': 'user'}, {'content': "Answer: C \nExplanation: Agents that are generally administered comprise the depolarizing muscle relaxant succinylcholine, as well as non-depolarizing agents mivacurium (sho acting), cisatracurium, rocuronium, vecuronium (all three intermediate acting), and pancuronium (long acting). Long acting agents increase a patient's risk of postoperative respiratory complications, which may be related to residual neuromuscular blockade. Use of intermediate acting non-depolarizing neuromuscular blocking agents during surgery are associated with an increased risk of severe postoperative, respiratory complications Ref: Intermediate acting non-depolarizing neuromuscular blocking agents and risk of postoperative respiratory complications: prospective propensity score matched coho study ; BMJ 2012;345:e6329.", 'role': 'assistant'}]