The current status of malignant hyperthermia.
Lukun Yang1, Timothy Tautz2, Shulin Zhang3
1Department of Anesthesiology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai, Guangdong 519000, China;Department of Anesthesiology and Pain Medicine, University of California Davis Health, Sacramento, CA 95817, USA.
Journal of Biomedical Research
|April 20, 2020
Summary
Malignant hyperthermia (MH) is a rare, life-threatening disorder causing muscle hyper-metabolism due to excessive calcium release. Prompt diagnosis and dantrolene treatment are crucial for MH patients.
Area of Science:
- Pharmacogenetics
- Anesthesiology
- Skeletal Muscle Physiology
Background:
- Malignant hyperthermia (MH) is a rare, life-threatening pharmacogenetic disorder.
- It is triggered by anesthetics, succinylcholine, exercise, or heat, leading to uncontrolled skeletal muscle hyper-metabolism via excessive calcium release from the sarcoplasmic reticulum.
- Prevalence varies globally, with genetic mutations in RYR1 and CACNA1S implicated in susceptibility.
Purpose of the Study:
- To review the epidemiology, clinical symptoms, diagnosis, and treatment of malignant hyperthermia.
- To highlight the importance of anesthesiologist awareness and understanding of MH characteristics.
- To discuss recent developments in MH management.
Main Methods:
- Review of existing literature on malignant hyperthermia.
- Summary of epidemiological data, clinical presentations, and diagnostic methods.
- Overview of current treatment strategies, including dantrolene therapy.
Main Results:
- MH presents with variable symptoms including hypercarbia, tachycardia, acidosis, and muscle rigidity.
- Genetic testing and contracture testing are used for diagnosis, with contracture testing considered the gold standard.
- Dantrolene is the primary treatment, working by inhibiting calcium release from the sarcoplasmic reticulum.
Conclusions:
- Accurate and timely diagnosis of MH is challenging due to variable symptoms but is critical for patient survival.
- Anesthesiologists must possess a strong understanding of MH to ensure prompt recognition and management.
- Continued research and awareness are vital for improving outcomes in patients with malignant hyperthermia.
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