P6588Impact of age and sex on the long-term prognosis associated with early repolarization in the general population

Abstract Background Early repolarization (ER) in the electrocardiogram (ECG) has been associated with increased sudden cardiac death (SCD) risk in the general population. However, controversy remains about the risk associated with ER in different population subgroups. Purpose We evaluated whether age and sex affect the prognostic significance of ER in general population subjects. Methods The study population consisted of Finnish general population subjects aged over 30 years participating in the Mini-Finland Health Survey in 1978–80. Subjects underwent extensive baseline health examinations including a resting 12-lead ECG and were followed for 24±10 years. After excluding ECGs with QRS duration >110ms, the presence of ER (J-point elevation ≥0.1 mV in ≥2 inferior/lateral leads) was assessed from the remaining 6,631 subjects. The association between ER and SCD risk was analysed in subgroups according to age (