Key result
Early repolarization syndrome is linked to high lethal arrhythmia risk despite lacking clear mechanistic evidence.
Why the study?
There is a huge lack of evidence regarding arrhythmogenesis, genetics, and molecular mechanisms of J wave syndromes in early repolarization syndrome.
Early repolarization syndrome is associated with lethal arrhythmias, and while ICD implantation is the primary treatment after cardiac arrest, identifying high-risk patients remains the main prophylactic challenge.
ICD decisions in early repolarization syndrome should remain cautious; leaves open arrhythmogenesis, genetics, and molecular mechanisms.
Early repolarization syndrome is associated with high risk of lethal arrhythmias. There is still a huge lack of evidence in the area of arrhythmogenesis, genetics and molecular mechanisms of J wave syndromes. Early repolarization is characterized by so called J waves which are seen in infero-lateral leads (II, III, aVF, V4, V5, V6). The early repolarization is dependent on rapid outward potassium current. One of the latest thesis on ventricular arrhythmias induction are various refraction times of Ito currents in epicardium and endocardium forming electrical current, which induces phase 2 re-entry arrhythmias. The treatment after cardiac arrest survival is implantation of cardioverter-defibrillator. There are few pharmacological methods of repolarization pattern restoration. Reviews of premature ventricular contractions inducing ventricular fibrillation, mainly in Brugada syndrome, ablation have been presented. The main prophylactic issue is to identify the most endangered patients.
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Agnieszka Wojdyła Hordyńska (2019) conducted a review in Early repolarization syndrome. Early repolarization syndrome is associated with a high risk of lethal arrhythmias, though evidence regarding its arrhythmogenesis, genetics, and molecular mechanisms remains lacking.
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