Sodium Channel Blockers Enhance the Temporal QT Interval Variability in the Right Precordial Leads in Brugada Syndrome

QT-interval prolongation in right precordial leads: an additional electrocardiographic hallmark of Brugada syndrome.

OBJECTIVES The aim of this study was to evaluate whether the occurrence of the Brugada Syndrome typical electrocardiogram (ECG) pattern (i.e., right bundle branch block, coved-type ST-segment elevation, and T-wave inversion in the right precordial leads) is characterized by a concomitant lengthening of QT intervals in the right precordial leads. BACKGROUND It has been suggested that the typic...

Brugada Syndrome Manifested by the Typical Electrocardiographic Pattern both in the Right Precordial and the High Lateral Leads

We identified a patient with the Brugada syndrome and frequent episodes of the traumatic syncope. This patient presented with alternating ST-segment elevation in the right precordial and the high lateral leads. The signal-averaged ECG was positive for the late potentials and electrophysiology study revealed no inducible supraventricular or ventricular tachycardias. Because of the frequent traum...

Unusual ST-Segment Elevation in the Anterolateral Precordial Leads: Ischemia, Brugada Phenocopy, Brugada Syndrome, All, or None?

The patient is a 65-year-old white male with history of type 2 diabetes mellitus, hypertension, chronic smoking, and prior stroke with residual left hemiparesis and aphasia. His medication included losartan, furosemide, simvastatin, and metformin. He was admitted to the emergency room in cardiac arrest and was quickly resuscitated with cardiopulmonary resuscitation and external electric cardiov...

QT Interval and QT Variability

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