(1) Appearance of a coved type ST segment elevation (gradually descending terminal portion) in more than one right precordial lead, in the presence or absence of a sodium channel blocker and one of the following clinical criteria: |
Documented ventricular fibrillation |
Self terminating polymorphic VT |
Family history of SCD (<45 years) |
Coved type ECGs in family members |
Electrophysiological inductibility |
Syncope or nocturnal agonal respiration |
The appearance of the ECG features, without these clinical symptoms, is referred to as an idiopathic Brugada ECG pattern (not BS) |
(2) Appearance of saddle back type ST segment elevation (terminal portion >1 mm) in more than one right precordial lead under baseline conditions with conversion to coved type following challenge with a sodium channel blocker. Drug induced ST segment elevation >2 mm should raise the possibility of BS when one or more of the aforementioned clinical criteria are present. |
(3) Appearance of saddle back type ST segment elevation (terminal portion <1 mm) in more than one lead under baseline conditions with conversion to coved type following challenge with a sodium channel blocker. |