Shoest acting non depolarizing neuromuscular blocker:-

Fastest onset and shoest duration neuromuscular blocker = succinylcholine (onset = 30-45 sec) duration 5-6 minutes Fastest onset non depolarizing = rocuronium (onset = 75-90 sec). Rapacuronium is fastest acting bit not in clinical use. Rest all neuromuscular blockers onset of action = 3-5 minutes Shoest duration non depolarizing - mivacurium