Malignant hyperthermia

T88.3

  • Dantrolene IV, 2.5 mg/kg as a single dose (preferably through large bore cannula).
    • Reconstitute with 60 mL water for injection. For a 70 kg patient, 175 mg (9 vials) is required.
    • Administer subsequent doses to clinical effect (cardiac and respiratory symptoms stabilise, muscle tone and body temperature reduced).
    • Doses higher than 10 mg/kg is uncommon and the clinician should question the diagnosis.
    • Although, high doses of 10 mg/kg may be required in muscular males.

LoEIII1 [26]