UNCONTROLLED WHEN PRINTED
Introduction
  • Depolarising neuromuscular blocking agent
  • A short acting muscle relaxant
Indications
  • Complete muscle relaxation to facilitate endotracheal intubation.
Contraindications
  • Known hypersensitivity to Suxamethonium
  • Upper airway obstruction
  • Severe respiratory distress
  • Known history of Suxamethonium apnoea
  • ECG signs of hyperkalaemia in conditions such as muscle necrosis and renal failure
  • Organophosphate poisoning
  • Known history of malignant hyperthermia
  • Avoid in chronic neuromuscular disease (if known)
Precautions / Notes
  • Sedation is required prior to use
  • A second dose of Suxamethonium usually causes profound bradycardia
  • Complete muscle relaxation occurs within 30-60 seconds and persists for about 2-3 minutes.
  • Keep refrigerated at 2-8°C
Management
Critical Care Paramedic only

Conduct ASMA consult if Suxamethonium contraindicated or as required

Adult IV/IO:

  • 1-2mg/kg
  • Repeat dose if indicated

Paediatric IV/IO:

  • 2mg/kg
Special Considerations
  • Muscular fasciculations
  • Increased intraocular pressure
  • Increased intragastric pressure
  • Elevated serum potassium levels
  • Bradycardia

References
References
Presentation
100mg in 2ml ampoule

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Head of Clinical Services

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