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[Brugada syndrome]
1Department of Internal Medicine, Nippon Medical School Tama-Nagayama Hospital.
Nihon Rinsho. Japanese Journal of Clinical Medicine
|July 9, 2005
Summary
Brugada syndrome is a heart condition with ST segment elevation, leading to sudden death risk. Genetic mutations in SCN5A are linked to this syndrome, requiring ICDs for symptomatic patients.
Area of Science:
- Cardiology
- Genetics
- Electrophysiology
Context:
- Brugada syndrome, identified in 1992, presents with characteristic ECG changes (ST elevation in V1-V3).
- It is associated with a significant risk of sudden cardiac death, particularly in males.
- The SCN5A gene mutation, encoding the sodium channel alpha-subunit, was identified as a primary cause in 1998.
Purpose:
- To define Brugada syndrome based on clinical and genetic findings.
- To outline diagnostic criteria proposed by the European Society of Cardiology.
- To highlight management strategies for symptomatic individuals.
Summary:
- Brugada syndrome is an inherited cardiac condition characterized by specific electrocardiogram (ECG) abnormalities and an elevated risk of sudden cardiac death.
- Genetic analysis has identified mutations, primarily in the SCN5A gene, as a key factor in its etiology.
- Current diagnostic criteria are based on clinical presentation, ECG findings, and genetic evidence.
Impact:
- Improved understanding of Brugada syndrome's genetic basis and clinical manifestations.
- Standardized diagnostic criteria facilitate earlier identification and risk stratification.
- Implantable cardioverter-defibrillator (ICD) implantation is crucial for managing symptomatic patients with high recurrence rates of lethal arrhythmias.