Prevalence of electrocardiographic findings suggestive of sudden cardiac death risk in 10,867 apparently healthy young Korean men

Jae Sun Uhm, Il Ung Hwang, Yong Seog Oh, Min Seok Choi, Sung Won Jang, Woo Seung Shin, Ji Hoon Kim, Man Young Lee, Tai Ho Rho, You Ho Kim, Jung Hoon Sung, Young Soo Lee, Jeong Gwan Cho, Dong Jin Oh, Dae Kyeong Kim, June Namgung, Kyoung Min Park, Yong Hoon Kim, Yoon Nyun Kim, Hong Euy LimTae Joon Cha, Young Keun On, Dong Gu Shin, Hui Nam Pak, Nam Ho Kim

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

Background: The objective of this study was to determine the prevalence of electrocardiographic (ECG) findings suggestive of sudden cardiac death risk in apparently healthy young Korean men. Methods: We administered questionnaires that elicited personal and family histories and performed ECGs on 10,867 male subjects (mean age, 20.9 years). The subjects with abnormal ECG findings underwent echocardiography, a treadmill test, Holter monitoring, a flecainide provocation test, or an electrophysiologic study (EPS) according to the ECG findings and histories. Results: Of the subjects, 5.95% had left ventricular hypertrophy on ECG, but no subjects had hypertrophic cardiomyopathy by echocardiography. The percentage of subjects with a Brugada ECG pattern was 0.90%. We identified one subject with a positive result on the flecainide provocation test. The percentage of subjects with a preexcitation ECG was 0.17%. In two of the subjects, supraventricular tachycardia was induced in the EPS. Of the subjects, 0.05% had epsilon waves, but there were no subjects with arrhythmogenic right ventricular dysplasia/cardiomyopathy by echocardiography. The percentage of subjects with long QT intervals was 0.02%, but there were no arrhythmias on the treadmill test or Holter monitoring. Conclusions: The prevalence of a Brugada ECG pattern in apparently healthy young men is higher in Korea than other countries.

Original languageEnglish
Pages (from-to)717-723
Number of pages7
JournalPACE - Pacing and Clinical Electrophysiology
Volume34
Issue number6
DOIs
Publication statusPublished - 2011 Jun

All Science Journal Classification (ASJC) codes

  • Cardiology and Cardiovascular Medicine

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