This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anaesthesia Q Bank, Subject name: Anaesthesia
All of the following are intermediate-duration Non depolarizing NMB except- 
Select and explain. 
A. Pancuronium, B. Vecuronium, C. Rocuronium, D. Atracurium
A: Pancuronium
Answer: A: Pancuronium 
Explanation: Non depolarizing muscle relaxants are classified according to their structure and duration of action as: Stucture Clinical duration Long acting (>50 min) Intermediate (20-50 min) Sho (15-20 min) Ultra-sho (<10-12 min) Pancuronium Vecuronium Steroidal Pipecuronium Rocuronium d-Tubocurarine Benzyliso- quinolinium Metacurine Atracurium Doxacurium Cis-atracurium Mivacurium Onium chlorofumarate Gantacurium Phenolic ether Gallamine