| ǥ : Clinical award session
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ȣ - 530831 10 |
| Electrocardiographic Findings and Risk Factors of Sudden Cardiac Death in 10867 Apparently Healthy Young Men |
| 가톨릭대 순환기내과¹ , 국군일동병원² , 원광대 순환기내과³ , 인제대 순환기내과⁴, 강원대 심장내과5, 서울아산병원 심장내과6, 연세대 심장내과7 , 분당차병원 심장내과8, 영남대 순환기내과9, 한림대 순환기내과10, 삼성서울병원 순환기내과11, 계명대 심장내과12, 고려대 순환기내과13, 고신대 심장내과14, 전남대 순환기내과15 |
| 엄재선¹, 오용석¹, 최민석¹, 장성원¹, 신우승¹, 김지훈¹, 이만영¹, 노태호¹, 황일웅², 김남호³, 김대경⁴, 남궁준⁴, 김용훈5, 박경민6, 김유호6, 박희남7, 성정훈8, 신동구9, 오동진10, 온영근11, 이영수12, 임홍의13, 차태준14, 조정관15 |
Background and objectives: Brugada syndrome, long QT syndrome and other arrhythmias can be causes of sudden cardiac death (SCD). Objective of this study is to analyze electrocardiographic (ECG) findings and risk factors of SCD on ECGs in apparently healthy young men. Subjects and methods: We took questionnaires and ECG’s of 10867 male soldiers (mean age, 21.9 years). Results: Subjects with history of syncope, palpitation and family history of SCD were 0.25%, 0.22%, and 0.02%. Subjects with abnormal or borderline ECGs were 32.61%. The most common abnormal findings in each category were sinus bradycardia (27.24%), right axis deviation (17.55%), left ventricular hypertrophy by voltage (5.94%), and right bundle branch block (6.61%). Prevalence of Brugada pattern, ventricular preexcitation, epsilon wave and long QT on a single ECG were 0.90%, 0.17%, 0.05% and 0.02%. (Table 1) Conclusion: ECG can be a tool for evaluating risk factors of SCD for apparently healthy young men.
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Table 1. Prevalence of the electrocardiographic findings
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Electrocardiographic Findings |
Percent |
Electrocardiographic Finding |
Percent |
|
Abnormal rhythms |
|
Conduction abnormalities |
|
|
Sinus bradycardia |
27.24 |
1° AV block |
0.49 |
|
Sinus arrhythmia |
6.42 |
2° AV block, Mobitz type 1 |
0.01 |
|
Atrial rhythm |
0.74 |
2° AV block, Mobtitz type 2 |
0 |
|
Axis deviations |
|
Left bundle branch block |
0 |
|
Left axis deviation |
4.41 |
Left anterior fascicular block |
0.70 |
|
Right axis deviation |
17.55 |
Left posterior fascicular block |
0.18 |
|
Northwest axis deviation |
0.03 |
Right bundle branch block |
6.61 |
|
Borderline findings |
|
IVCD |
0.19 |
|
Early replorization |
9.91 |
Channelopathies |
|
|
Nonspecific ST-T change |
3.06 |
Brugada pattern, type 1 |
0 |
|
Chamber enlargements |
|
Brugada pattern, type 2 |
0.65 |
|
LVH by voltage |
5.94 |
Brugada pattern, type 3 |
0.25 |
|
LVH with strain |
0.02 |
Long QT |
0.02 |
|
RVH |
0.67 |
Epsilon wave |
0.05 |
|
Left atrial enlargement |
0.19 |
Ventricular preexcitation |
0.17 |
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Right atrial enlargement |
0.25 |
Miscellaneous |
|
|
Premature beats |
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Low voltage |
0.06 |
|
Atrial premature beat |
0.75 |
Dextrocardia |
0.01 |
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Junctional premature beats |
0.02 |
|
|
|
Ventricular premature beats |
0.26 |
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LVH; LV hypertrophy, RVH; RV hypertrophy, AV; atrioventricular, IVCD; Intraventricular conduction disturbance
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