Long-term prognosis associated with early repolarisation pattern in Chinese population with atherosclerotic risk

Yun-Jiu Cheng1, Wei-Yi Mei1, Xu-Miao Chen1

  • 1Department of Cardiology, The First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China.

Insights

Early repolarization pattern (ERP) significantly increases the risk of sudden cardiac death (SCD) and overall mortality in individuals with atherosclerotic risk factors. This finding highlights ERP as a crucial prognostic marker for cardiovascular events in high-risk populations.

Area of Science:

  • Cardiology
  • Electrocardiography
  • Preventive Cardiology

Background:

  • Early repolarization pattern (ERP) is linked to sudden cardiac death (SCD) in individuals without structural heart disease.
  • The prognostic value of ERP in patients with atherosclerotic heart disease remains unclear.

Purpose of the Study:

  • To investigate the prognostic significance of ERP in a large population at high risk for atherosclerotic heart disease.
  • To determine the association between ERP and risks of sudden cardiac death, coronary heart disease death, and all-cause mortality.

Main Methods:

  • Prospective assessment of 18,231 subjects with atherosclerotic risk factors.
  • ECG analysis for ERP and follow-up for 7.6 years.
  • Cox proportional hazards models used for risk estimation, adjusted for confounders.

Main Results:

  • ERP was associated with a significantly increased risk of SCD (HR 1.91), coronary heart disease (CHD) death (HR 1.80), and all-cause mortality (HR 1.35).
  • Specific ERP features (inferior leads, J wave amplitude, notching, ST segment) indicated higher SCD risk.
  • An absolute increase of 52.3 SCDs per 100,000 person-years was observed in this high-risk population.

Conclusions:

  • ERP is a significant predictor of SCD, CHD death, and all-cause mortality in individuals with atherosclerotic risk factors.
  • The association of ERP with all-cause mortality is primarily driven by SCD risk.
  • ERP is a valuable prognostic marker for cardiovascular events in populations at high risk for atherosclerotic disease.
Abstract

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