Early Repolarization Pattern (ERP) Essay

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Introduction

Early repolarization pattern (ERP) is an enigmatic common electrocardiographic (ECG) finding,occurring in 1% to 2% of the general population (1). ERP prevalence is decreasing with advancing age (2) This ECG pattern is frequently observed in healthy persons,particularly young,male (3,4,5), athletic (6,7), and of African-American origin (4,5,6,7,8).On the 12-lead ECG the ERP is characterized as “notching” or “slurring” of the terminal portion of the R wave and beginning of the ST-segment that produces a positive hump known as J wave. The J wave is a deflection with a dome that appears immediately after the end of QRS complex followed by ST-segment elevation ≥ 0.1 mV (or 1 mm, varying from 1 to 4 mm) above isoelectric line
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Introduction

Early repolarization pattern (ERP) is an enigmatic common electrocardiographic (ECG) finding,occurring in 1% to 2% of the general population (1). ERP prevalence is decreasing with advancing age (2) This ECG pattern is frequently observed in healthy persons,particularly young,male (3,4,5), athletic (6,7), and of African-American origin (4,5,6,7,8).On the 12-lead ECG the ERP is characterized as “notching” or “slurring” of the terminal portion of the R wave and beginning of the ST-segment that produces a positive hump known as J wave. The J wave is a deflection with a dome that appears immediately after the end of QRS complex followed by ST-segment elevation ≥ 0.1 mV (or 1 mm, varying from 1 to 4 mm) above isoelectric line (relative to the subsequent TP interval) concave upward in at least two contiguous ECG leads. This ECG finding is most frequently seen in the precordial leads from V3 to V5 and often in the inferior leads II, III, and aVF (9)
Normal ERP should be differentiated from others conditions with ST segment elevation such as asthenic habitus, acute pericarditis, STEMI,Brugada syndrome (BrS), congenital short QT syndrome(SQTS), and IVF (10,11).
Although the condition is usually considered benign, its potential arrhythmogenicity has been suggested by experimental studies.(12)
The majority of such sudden cardiac arrests are caused by ventricular tachyarrhythmias, which occur in persons without structural heart disease in 6 to 14% of cases. (13,14)
These

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