Which of the following is the neuromuscular blocking agent with the shortest onset of action ?: (A) Mivacurium, (B) Vecuronium, (C) Rapacuronium, (D) Succinylcholine
Answer is D. Fastest acting (shortest onset of action) muscle relaxant → Succinylcholine
Fastest acting non-depolarizing muscle relaxant → Rocuronium.