Calcium in Brugada syndrome: Questions for future research

Research output: Contribution to journalReview article

Abstract

The Brugada syndrome (BrS) is characterized by coved-type ST-segment elevation in the right precordial leads on the electrocardiogram (ECG) and increased risk of sudden cardiac death (SCD). While it is an inheritable disease, determining the true prevalence is a challenge, since patients may report no known family history of the syndrome, present with a normal spontaneous ECG pattern at the time of examination, and test negative for all known BrS-causative genes. In fact, SCD is often the first indication that a person is affected by the syndrome. Men are more likely to be symptomatic than women. Abnormal, low-voltage, fractionated electrograms have been found in the epicardium of the right ventricular outflow tract (RVOT). Ablation of this area abolishes the abnormal electrograms and helps to prevent arrhythmic recurrences. BrS patients are more likely to experience ventricular tachycardia/fibrillation (VT/VF) during fever or during an increase in vagal tone. Isoproterenol helps to reverse the ECG BrS phenotype. In this review, we discuss roles of calcium in various conditions that are relevant to BrS, such as changes in temperature, heart rate, and vagal tone, and the effects of gender and isoproterenol on calcium handling. Studies are warranted to further investigate these mechanisms in models of BrS.

Original languageEnglish
Article number1088
JournalFrontiers in Physiology
Volume9
Issue numberAUG
DOIs
Publication statusPublished - Aug 10 2018

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Keywords

  • Brugada syndrome
  • Channelopathies
  • Fever
  • Genetic testing
  • Ion channel
  • Sudden cardiac death

ASJC Scopus subject areas

  • Physiology
  • Physiology (medical)

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