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Malignant hyperthermia (MH) is a rare disorder that leads to a hypermetabolic response; if unrecognized, it can quickly lead to serious morbidity and mortality. It is imperative that critical care transport providers are able to recognize and initiate treatment for MH. A 33-year-old man presented to the emergency department with seizures and altered mental status after ingesting methamphetamine. The patient was intubated in the emergency department with succinylcholine and propofol. After intubation, the patient became tetanic, hyperthermic, and hypercarbic. Given the concern for MH, the patient was treated with dantrolene and transported by helicopter air ambulance to the affiliated quaternary care center where he progressed to multiorgan failure and died. MH is a genetic disorder that manifests after exposure to certain stimuli, most notably inhaled anesthetics and succinylcholine. The hypermetabolic response is triggered by unregulated release of intracellular calcium secondary to a dysfunctional calcium channel. MH is often diagnosed clinically. Early clinical manifestations of MH include an increase in end-tidal carbon dioxide, tachycardia, muscle rigidity, and hyperthermia. For prehospital clinicians, the most likely offending agent is succinylcholine. The pharmacologic treatment of MH is dantrolene. Prompt recognition and treatment of MH can decrease morbidity and mortality. Copyright © 2022 Air Medical Journal Associates. Published by Elsevier Inc. All rights reserved.

Citation

Ashley Panas, Philip Walker. Treatment of Malignant Hyperthermia During Interfacility Transport of a Patient With Methamphetamine Toxicity. Air medical journal. 2022 May-Jun;41(3):320-322

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PMID: 35595342

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