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2010•Advances in Cardiovascular DiseasesRequires access

Electrocardiographic Early Repolarization:Progress and Puzzles

Xingpeng Liu

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Abstract

Early repolarization(ER) is a common electrocardiographic(ECG) variant,defined as a ≥0.1 mV elevation of the QRS-ST junction manifesting as J-point slurring or notching in at least 2 contiguous leads.It is a long-held belief that ER is a benign ECG variant with favorable prognosis.However,recent studies have highlighted that ER is potentially associated with idiopathic ventricular fibrillation or sudden cardiac death.This article is a review of progress made in defining and reconciling the ECG enigma in the clinic.

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What this paper is about

Early repolarization(ER) is a common electrocardiographic(ECG) variant,defined as a ≥0.1 mV elevation of the QRS-ST junction manifesting as J-point slurring or notching in at least 2 contiguous leads.It is a long-held belief that ER is a benign ECG variant with favorable prognosis.However,recent studies have highlighted that ER is potentially associated with idiopathic ventricular fibrillation or sudden cardiac death.This article is a review of progress made in defining and reconciling the ECG enigma in the clinic.

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Available abstract

Early repolarization(ER) is a common electrocardiographic(ECG) variant,defined as a ≥0.1 mV elevation of the QRS-ST junction manifesting as J-point slurring or notching in at least 2 contiguous leads.It is a long-held belief that ER is a benign ECG variant with favorable prognosis.However,recent studies have highlighted that ER is potentially associated with idiopathic ventricular fibrillation or sudden cardiac death.This article is a review of progress made in defining and reconciling the ECG enigma in the clinic.

Key concepts: Benign early repolarization, Medicine, J wave, Notching, Cardiology, Internal medicine, Ventricular fibrillation, QRS complex

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