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What is MH?

Malignant hyperthermia is a life-threatening reaction to anaesthetic drugs. The term “malignant” hyperthermia arises from the progressive nature of the condition and its ultimate end in death associated with a very high body temperature if the condition is not recognised and treated promptly.

Between 1: 3,000 and 1: 10,000 people carry the genetic risk of developing malignant hyperthermia during anaesthesia.  Those at risk can receive anaesthetics safely as long as the inhalational anaesthetics and suxamethonium are avoided.

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