<prompt> Which of the following is NOT an intermediate acting muscle relaxant?CisatracuriumRocuroniumMivacuriumVecuronium  <response>: 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 patients 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. 