This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non-depolarising Neuromuscular Blocking Agents, Subject name: Anaesthesia
Shortest acting muscle relaxant - 
Select and explain. 
A. Pancuronium, B. Atracurium, C. Mivacurium, D. Vecuronium
C: Mivacurium
Answer: C: Mivacurium 
Explanation: Ans. is 'c' i.e., Mivacurium Mivacuriumo Mivacurium is the shortest acting competitive blockers.o It does not need reversal - can be used as an alternative to SCh for endotracheal intubation.o It is metabolized rapidly by plasma cholinesterases - prolonged paralysis can occur in pseudocholinesterase deficiency.o Mivacurium is the only nondepolarising (competitive) blocker that is metabolized by plasma cholinesterase (pseudocholinesteres).