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lüll Brugada syndrome Napolitano C; Priori SGOrphanet J Rare Dis 2006[Sep]; 1 (ä): 35A novel clinical entity characterized by ST segment elevation in right precordial leads (V1 to V3), incomplete or complete right bundle branch block, and susceptibility to ventricular tachyarrhythmia and sudden cardiac death has been described by Brugada et al. in 1992. This disease is now frequently called "Brugada syndrome" (BrS). The prevalence of BrS in the general population is unknown. The suggested prevalence ranges from 5/1,000 (Caucasians) to 14/1,000 (Japanese). Syncope, typically occurring at rest or during sleep (in individuals in their third or fourth decades of life) is a common presentation of BrS. In some cases, tachycardia does not terminate spontaneously and it may degenerate into ventricular fibrillation and lead to sudden death. Both sporadic and familial cases have been reported and pedigree analysis suggests an autosomal dominant pattern of inheritance. In approximately 20% of the cases BrS is caused by mutations in the SCN5A gene on chromosome 3p21-23, encoding the cardiac sodium channel, a protein involved in the control of myocardial excitability. Since the use of the implantable cardioverter defibrillator (ICD) is the only therapeutic option of proven efficacy for primary and secondary prophylaxis of cardiac arrest, the identification of high-risk subjects is one of the major goals in the clinical decision-making process. Quinidine may be regarded as an adjunctive therapy for patients at higher risk and may reduce the number of cases of ICD shock in patients with multiple recurrences.|*Mutation[MESH]|Anti-Arrhythmia Agents/therapeutic use[MESH]|Brugada Syndrome/*genetics/*pathology/therapy[MESH]|Defibrillators, Implantable[MESH]|Humans[MESH]|Muscle Proteins/*genetics[MESH]|NAV1.5 Voltage-Gated Sodium Channel[MESH]|Quinidine/therapeutic use[MESH]|Sodium Channels/*genetics[MESH] |