Malignant hyperthermia

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Learn what to do if your child is at risk for malignant hyperthermia and has to have surgery.

Key points

  • Malignant hyperthermia (MH) is a rare, inherited metabolic disorder that is triggered, or activated, by commonly used general anaesthetic gases or anaesthetic-related muscle relaxant.
  • If you are aware of any family history of MH, please notify your surgeon and ask for a consultation with the pre-anaesthesia clinic.
  • During the procedure, the anesthesiologist will avoid anesthetic gases and muscle relaxants that are known to trigger reactions. This will almost completely remove the likelihood of an MH reaction occurring.
  • Your child will be closely monitored for a minimum of 2 hours in the recovery room.
  • You may take your child home on the day of surgery if there have not been any problems during the anaesthesia.
  • If you see any signs of a reaction, please return to hospital or head to your nearest emergency department, and asked to be assessed by a member of the anaesthesia team.
Last updated: February 9th 2015