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Malignant hyperthermia.

D J Byers1, G Krishna

  • 1Department of Anesthesia, Indiana University School of Medicine, JW Riley Hospital for Children, Indianapolis 46202-5200.

Seminars in Pediatric Surgery
|February 1, 1992
PubMed
Summary
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Malignant hyperthermia, a rare genetic disorder triggered by anesthetics, is linked to a defective calcium release channel in skeletal muscle. Research points to human chromosome 19 as the location of this abnormality, with dantrolene improving survival rates.

Area of Science:

  • Anesthesiology
  • Genetics
  • Molecular Biology

Background:

  • Malignant hyperthermia is a rare, life-threatening pharmacogenetic disorder.
  • It is triggered by volatile anesthetics and succinylcholine in susceptible individuals.
  • Abnormalities in the skeletal muscle sarcoplasmic reticulum calcium release channel are implicated.

Purpose of the Study:

  • To investigate the genetic basis of malignant hyperthermia.
  • To identify the chromosomal location of the genetic defect.
  • To discuss the impact of dantrolene and future diagnostic approaches.

Main Methods:

  • Genetic linkage studies were performed.
  • Analysis focused on identifying chromosomal abnormalities.
  • Review of recent literature on etiology and treatment.

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Main Results:

  • Genetic studies have localized the primary defect to human chromosome 19.
  • The sarcoplasmic reticulum calcium release channel is the likely site of the abnormality.
  • Dantrolene has significantly reduced mortality.

Conclusions:

  • Malignant hyperthermia is associated with a specific genetic defect on chromosome 19.
  • Understanding the genetic etiology is crucial for diagnosis and management.
  • Advancements in diagnosis are anticipated with ongoing research.