Brugada syndrome has been described as the association of a right bundle block with ST segment elevation on the V1 to V3 electrocardiogram in patients with a structurally normal heart. The rhythmic risk is thus difficult to evaluate in asymptomatic patients in whom the rate of events is estimated at 0.2 to 1.4% of events per year. In addition, the predictive value of ventricular pacing remains controversial; There is therefore currently no review to effectively assess rhythmic risk in patients with Brugada type I syndrome.

Investigators aimed to show a difference in pulmonary infundibulum voltage mapping in symptomatic and asymptomatic patients with Brugada type 1 syndrome with a comparable ECG.

The mapping of the pulmonary infundibulum will be performed during electrophysiological exploration. Only the catheter used differs from the usual procedure.

Inclusion Criteria:

Group 21

• Brugada Type 1 syndrome
• Age : 50-60 years old
• Asymptomatic
• Signed informed consent

Group2

• Brugada Type 1 syndrome
• Age >18 years old
• Implantable defibrillator
• Having received at least 1 appropriate shock or a sudden sudden death
• Signed informed consent

Groups 1 and 2

Exclusion Criteria:

• Brugada Type 2 or 3 syndrome
• Contraindication to electrophysiological exploration