Open chest epicardial mapping in an asymptomatic patient with Brugada syndrome

Key Teaching Points•Epicardial mapping was done in a patient with sporadic and entirely asymptomatic Brugada syndrome.•Multiple abnormal potentials were recorded on the right ventricle epicardium, especially from below the pulmonary artery valve to above the tricuspid annulus.•The electrocardiogram was normalized after ablation of the abnormal epicardial potentials. •Epicardial mapping was done in a patient with sporadic and entirely...