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. 2011 Apr 19:2:33-40.
doi: 10.2147/OAJSM.S19029. eCollection 2011.

Prevalence of Brugada-type ECG pattern and early ventricular repolarization pattern in Tunisian athletes

Sana Ouali  1 , Helmi Ben Salem, Sami Hammas, Elyes Neffeti, Fahmi Remedi, Abdallah Mahdhaoui, Essia Boughzela, Rafik Mankai
Affiliations

Prevalence of Brugada-type ECG pattern and early ventricular repolarization pattern in Tunisian athletes

Sana Ouali et al. Open Access J Sports Med. .

Abstract

Introduction: No data regarding the prevalence of the Brugada-type electrocardiogram (ECG) pattern and the early ventricular repolarization pattern (ERP) in the North African population were available. The aims of this study were to determine the frequency of Brugada-type ECG pattern and ERP in Tunisia and to evaluate ECG descriptors of ventricular repolarization in a population of athletes.

Methods: Over a 2-year period, resting 12-lead ECG recordings were analyzed from athletes (n = 540; 348 males; age 18.3 ± 2.4 years). Brugada-type ECG pattern was defined as Type 1, 2, or 3, and ERP was characterized by an elevation of the J point in the inferior and/or lateral leads. The population was divided into three groups of athletes: ERP group; Brugada-type ECG pattern group; and control group, with neither ERP nor Brugada ECG pattern. Clinical and electrocardiographic parameters were compared among the study groups.

Results: Nine subjects (1.66%) had a Brugada-type ECG pattern. None of them had the coved-type, 3 (0.6%) had the Type 2, and 6 (1.1%) had the Type 3. All subjects were asymptomatic. A Brugada-type ECG pattern was observed in seven males. No female had the Type 2 Brugada ECG pattern. ECG parameters were similar among Brugada-type ECG pattern and control athletes. ERP (119 subjects, 22%) was obtained in 98 males. Heart rate was lower, the QRS duration shorter and QT and Tpeak-Tend intervals were longer in ERP than control groups.

Conclusion: The results indicate that the frequency of the Brugada-type ECG pattern and ERP were respectively 1.66% and 22.00% in athletes, being more prevalent in males. The ERP group experienced shorter QRS duration and longer Tpeak-Tend interval than in the control population.

Keywords: ERP athletes; J wave; T wave.

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Figures

Figure 1
Figure 1
Type 2 Brugada-type ECG of an athlete demonstrates saddle-back type ST-segment elevation (>1 mm) in lead V2.
Figure 2
Figure 2
Sample electrocardiograms from two athletes, demonstrating early ventricular repolarization (ERP)-type ECG. ERP defined as ≥1 mm elevation of the QRS–ST junction (J point) in either inferior leads (Type 2) (A) or inferior and lateral leads (Type 3) (B).
See this image and copyright information in PMC

References

    1. Brugada P, Brugada J. Right bundle branch block, persistent ST segment elevation and sudden cardiac death: a distinct clinical and electrocardiographic syndrome. A multicenter report. J Am Coll Cardiol. 1992;20(6):1391–1396. - PubMed
    1. Brugada J, Brugada R, Brugada P. Right bundle-branch block and ST segment elevation in leads V1 through V3: a marker for sudden death in patients without demonstrable structural heart disease. Circulation. 1998;97(5):457–460. - PubMed
    1. Haissaguerre M, Derval N, Sacher F, et al. Sudden cardiac arrest associated with early repolarization. N Engl J Med. 2008;358(19):2016–2023. - PubMed
    1. Nam GB, Kim YH, Antzelevitch C. Augmentation of J waves and electrical storms in patients with early repolarization. N Engl J Med. 2008;358(19):2078–2079. - PMC - PubMed
    1. Tikkanen JT, Anttonen O, Junttila MJ, et al. Long-term outcome associated with early repolarization on electrocardiography. N Engl J Med. 2009;361(26):2529–2537. - PubMed

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