Malignant hyperthermia in the head and neck surgery patient: An update and review

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Abstract
Malignant hyperthermia, a disorder often initiated by exposure to a variety of anesthetic agents, continues to be of major importance to the head and neck surgeon because:1. approximately 40% of all reported reactions have occurred during anesthesia for head and neck surgery;2. the possibility of mortality still exists despite the use of new pharmacologic agents, such as dantrolene; and,3. subtle variations in the intraoperative and postoperative presentation of malignant hyperthermia are being increasingly recognized and treated. The authors briefly tabulate the 280 cases — which have occurred worldwide during otolaryngologic, dental, facial plastic, ophthalmologic and neurosurgical procedures — that are registered with the Department of Anaesthesia, University of Toronto, Canada. A case report depicting a less‐than‐typical reaction is presented. The authors emphasize that early recognition of the clinical features of an ongoing reaction, whether mild or severe, is by far the most important factor in reducing morbidity and mortality of patients who suffer hyperthermic crises while undergoing head and neck surgery.

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