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Metabolic changes in a case of malignant hyperthermia
British Journal of Anaesthesia
|May 1, 1983
Summary
Fulminant malignant hyperthermia (MH) in a patient showed metabolic changes in muscle and blood post-treatment. These findings, including elevated lactate and pyruvate, align with observations in a porcine model, aiding MH research.
Area of Science:
- Anesthesiology
- Biochemistry
- Veterinary Medicine
Background:
- Malignant hyperthermia (MH) is a severe pharmacogenetic disorder of skeletal muscle.
- Understanding the metabolic derangements during MH is crucial for effective treatment and management.
- Porcine models are frequently used to study MH due to physiological similarities.
Observation:
- Metabolic profiles of a patient with fulminant MH were analyzed 1 hour after initiating treatment, including dantrolene sodium.
- Samples of muscle tissue, whole blood, and plasma were collected for comprehensive metabolic analysis.
- These patient samples were compared against samples from a porcine model of MH.
Findings:
- In muscle tissue, elevated lactate, pyruvate, and citrate concentrations were observed, alongside reduced potassium, free inorganic phosphate, and glycogen.
- Adenosine triphosphate (ATP), adenosine diphosphate (ADP), and phosphoryl creatine levels remained unchanged in muscle.
- Blood analysis revealed increased concentrations of alanine, lactate, and glycerol, with heightened carbon dioxide production.
Implications:
- The observed metabolic changes in the patient closely mirror those found in the porcine MH model.
- This similarity validates the use of the porcine model for studying MH pathophysiology and treatment efficacy.
- Further research into these metabolic shifts can refine diagnostic criteria and therapeutic strategies for malignant hyperthermia.