@article{3107979,
    title = "A meta-analysis on the prognostic significance of inferolateral early repolarization pattern in Brugada syndrome",
    author = "Georgopoulos, S. and Letsas, K.P. and Liu, T. and Kalafateli, M. and Korantzopoulos, P. and Bürkle, G. and Vlachos, K. and Giannopoulos, G. and Efremidis, M. and Deftereos, S. and Sideris, A. and Takagi, M. and Yan, G.-X. and Ehrlich, J.R.",
    journal = "Europace",
    year = "2018",
    volume = "20",
    number = "1",
    pages = "134-139",
    publisher = "Oxford University Press",
    issn = "1099-5129, 1532-2092",
    doi = "10.1093/europace/euw394",
    keywords = "Article;  Brugada syndrome;  cardiovascular risk;  follow up;  heart arrhythmia;  heart repolarization;  high risk patient;  human;  meta analysis;  priority journal;  prognosis;  action potential;  adult;  aged;  Brugada syndrome;  chi square distribution;  complication;  female;  heart muscle conduction system;  heart rate;  male;  middle aged;  mortality;  odds ratio;  pathophysiology;  prognosis;  risk assessment;  risk factor;  sudden cardiac death;  time factor, Action Potentials;  Adult;  Aged;  Brugada Syndrome;  Chi-Square Distribution;  Death, Sudden, Cardiac;  Female;  Heart Conduction System;  Heart Rate;  Humans;  Male;  Middle Aged;  Odds Ratio;  Prognosis;  Risk Assessment;  Risk Factors;  Time Factors",
    abstract = "The early repolarization (ER) pattern has been linked to an increased risk for arrhythmic death in various clinical settings. There are limited and conflicting data regarding the prognostic significance of ER pattern in Brugada syndrome (BS). The aim of this meta-analysis was to provide a detailed analysis of the currently available studies regarding the arrhythmic risk in patients with BS and ER pattern. Current databases were searched until May 2015. A random-effect meta-analysis of the effect of ER pattern on the incidence of arrhythmic events in patients with BS was performed. Five studies were included comprising a total of 1375 patients with BS. An ER pattern was reported in 177 patients (12.8%). During follow-up (44.9-93 months), 143 patients (10.4%) suffered an arrhythmic event. Overall, BS patients with ER pattern displayed an increased risk of arrhythmic events compared to patients without ER (OR 3.29, 95% CI: 2.06 to 5.26, P < 0.00001; Heterogeneity: P = 0.11, r2=48%). Three studies provided data regarding ER pattern location. Inferior, lateral, or inferolateral ER pattern location was observed in 20.3%, 32.2%, and 48%, respectively. An inferolateral ER location conferred the higher arrhythmic risk (OR 4.87, 95% CI: 2.64 to 9.01, P< 0.00001; Heterogeneity: P = 0.85, r2=0%). This meta-analysis suggests that the ER pattern is associated with a high risk of arrhythmic events in patients with BS. In particular, BS patients with inferolateral ER (global ER pattern) displayed the highest arrhythmic risk. © 2017 The Author."
}