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[The Brugada syndrome]
A Mádle1, Z Kratochvíl, A Polívková
1II. interní klinika LF UK Plzen a Fakultní nemocnice, Plzen.
Vnitrni Lekarstvi
|April 24, 2002
Summary
Brugada syndrome, a genetic sodium channel anomaly, presents with specific ECG changes and risk of sudden cardiac death. Ajmaline testing can reveal latent cases, even without a family history of arrhythmias.
Area of Science:
- Cardiology
- Genetics
- Electrophysiology
Background:
- Brugada syndrome is a genetically determined disorder affecting cardiac sodium channels.
- It can lead to life-threatening ventricular arrhythmias and sudden cardiac death.
- Diagnosis can be challenging due to variable expression and lack of family history.
Observation:
- A patient presenting with febrile illness and pleuritis showed electrocardiographic findings suggestive of Brugada syndrome.
- The patient and family had no history of arrhythmias.
- A positive ajmaline challenge test confirmed latent Brugada syndrome.
Findings:
- The case highlights a typical Brugada syndrome electrocardiographic pattern (right bundle branch block, ST elevation V1-V3).
- Ajmaline, a sodium channel blocker, unmasked the condition by inducing characteristic ECG changes.
- The syndrome can occur in individuals without a known family history of cardiac events.
Implications:
- Early diagnosis of Brugada syndrome is crucial for preventing sudden cardiac death.
- Ajmaline provocative testing is valuable for identifying latent or variable cases.
- Understanding the genetic basis of Brugada syndrome aids in risk stratification and management.