The electrocardiogram of a patient with Brugada syndrome can be classified based on its features.
Leads: right precordial (V1, V2, V3)
Parameters:
(1) elevation of J wave
(2) T wave
(3) ST segment
Elevation J Wave
T Wave
ST Segment
Type
>= 2 mm
negative
coved type and gradually descening
1
>= 2 mm
positive or biphasic
saddle-back and elevated >= 1 mm
2
>= 2 mm
positive
saddle-back and elevated < 1 mm
3
The change must be present in more than 1 lead (2 or 3 of the 3).
Administration of a sodium channel blocker (ajmaline, flecainide, pilsicainide, procainamide) can result in changes in a patient’s type (Type 2 to Type 1, Type 3 to Type 1, Type 3 to Type 2).
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