AnalyST & Brugada Syndrome - Feasibility Study

To evaluate the correlation between ST elevation on the ECG and ST shift on the intracardiac EGM recorded with the AnalyST ICD, patients enrolled will have to be already diagnosed as presenting the Brugada Syndrome. They will undergo an ajmaline test, to unmask the type 1-ECG, characteristic from the Brugada syndrome.During the test, both surface ECG and intracardiac signal will be continuously recorded; then the signals will be compared in terms of amplitude of the ST shift, duration of the shift, and recovery period.