Mortality and Ventricular Arrhythmia in Patients with Early Ventricular Repolarization.

Area of Science:

• Cardiology
• Electrophysiology
• Public Health

Background:

• Early repolarization (ER) is linked to ventricular fibrillation risk, particularly in specific ECG leads and regions.
• Limited data exists on ER's impact in the Brazilian population.

Purpose of the Study:

• To assess the 10-year impact of ER on survival and ventricular arrhythmias (VA).
• To investigate ER's association with adverse cardiovascular outcomes in a Brazilian university hospital cohort.

Main Methods:

• Retrospective cohort study of patients with ER on electrocardiogram.
• Kaplan-Meier survival analysis and Cox regression models were used.
• Statistical significance was set at 5%.

Main Results:

• The study included a predominantly male population with an average age of 45.6 years.
• Ventricular arrhythmias (VA) occurred in 2.7% of patients, and all-cause mortality was 2.3%.
• No statistically significant difference in VA or mortality was found between ER groups.

Conclusions:

• Early repolarization (ER) was not associated with increased ventricular arrhythmias (VA) or all-cause mortality in this cohort.
• These findings suggest ER may not be a significant predictor of adverse outcomes in the studied Brazilian population.