Echocardiography During Ajmaline Test

The diagnosis of Brugada Syndrome is made when a type 1 pattern is present on the electrocardiogram (ECG), either spontaneously or after administration of a sodium channel blocker. For pathofysiological understanding, the investigators will analyse echocardiography images before and during the administration of Ajmaline. Comparing echocardiographies before and during negative Ajmaline test, will allow the investigators to indentify the effect of Ajmaline administration on cardiac function. The comparison between images of negative and positive Ajmaline tests will expose differences related to the occurence of a type 1 ECG.