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High Prevalence and Clinical Implication of Myocardial Bridging in Patients with Early Repolarization

 Jiwon Seo  ;  Junbeom Park  ;  Jaewon Oh  ;  Jae-Sun Uhm  ;  Jung-Hoon Sung  ;  Jong-Youn Kim  ;  Hui-Nam Pak  ;  Moon-Hyoung Lee  ;  Boyoung Joung 
 YONSEI MEDICAL JOURNAL, Vol.58(1) : 67-74, 2017 
Journal Title
Issue Date
Aged ; Coronary Angiography ; Electrocardiography ; Electrophysiological Phenomena ; Female ; Humans ; Male ; Middle Aged ; Myocardial Bridging/complications* ; Myocardial Bridging/diagnostic imaging* ; Myocardial Bridging/epidemiology ; Myocardial Bridging/physiopathology ; Myocardial Ischemia/etiology* ; Myocardial Ischemia/physiopathology ; Odds Ratio ; Prevalence ; Prognosis ; Prospective Studies
Early repolarization ; myocardial bridging ; sudden cardiac death ; tachycardia ; ventricular ; ventricular fibrillation
PURPOSE: Recent evidence suggests that early repolarization (ER) is related with myocardial ischemia. Compression of coronary artery by a myocardial bridging (MB) can be associated with clinical manifestations of myocardial ischemia. This study aimed to evaluate the associations of MB in patients with ER. MATERIALS AND METHODS: In consecutive patients (n=1303, age, 61±12 years) who had undergone coronary angiography, we assessed the prevalence and prognostic implication of MB in those with ER (n=142) and those without ER (n=1161). RESULTS: MB was observed in 54 (38%) and 196 (17%) patients in ER and no-ER groups (p<0.001). In multivariate analysis, MB was independently associated with ER (odd ratio: 2.9, 95% confidence interval: 1.98-4.24, p<0.001). Notched type ER was more frequently observed in MB involving the mid portion of left anterior descending coronary artery (LAD) (69.8% vs. 30.2%, p=0.03). Cardiac event was observed in nine (6.3%) and 22 (1.9%) subjects with and without ER, respectively. MB was more frequently observed in sudden death patients with ER (2 out of 9, 22%) than in those without ER (0 out of 22). CONCLUSION: MB was independently associated with ER in patients without out structural heart disease who underwent coronary angiography. Notched type ER was closely related with MB involving the mid portion of the LAD. Among patients who had experienced cardiac events, a higher prevalence of MB was observed in patients with ER than those without ER. Further prospective studies on the prognosis of MB in ER patients are required.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Jong Youn(김종윤) ORCID logo https://orcid.org/0000-0001-7040-8771
Pak, Hui Nam(박희남) ORCID logo https://orcid.org/0000-0002-3256-3620
Seo, Jiwon(서지원) ORCID logo https://orcid.org/0000-0002-7641-3739
Uhm, Jae Sun(엄재선) ORCID logo https://orcid.org/0000-0002-1611-8172
Oh, Jae Won(오재원) ORCID logo https://orcid.org/0000-0002-4585-1488
Lee, Moon-Hyoung(이문형) ORCID logo https://orcid.org/0000-0002-7268-0741
Joung, Bo Young(정보영) ORCID logo https://orcid.org/0000-0001-9036-7225
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