Non-depolarising muscle relaxants (NDMR)

Use a nerve stimulator to monitor effect and determine when subsequent doses (about a fifth of the intubating dose) are required.

Higher doses result in shorter onset times but longer duration of action.

  • Intermediate-acting neuromuscular blocking agents, e.g.:
    • Cisatracurium (shorter-acting)
      • Intubation dose 0.1–0.15 mg/kg.
      • Onset 3–5 minutes.
      • Duration of action 45–55 minutes.
      • Eliminated by Hoffman degradation, therefore can be used in renal or liver impairment

LoEIII [7]

  • Vecuronium
    • Intubation dose 0.08–0.1 mg/kg.
    • Intubate after 2 minutes.
    • Duration 20–30 minutes.
    • Eliminated by liver and kidney: avoid in renal and liver impairment.

LoEIII [8]