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논문 기본 정보

자료유형
학술저널
저자정보
Yoon Namsik (Heart Center of Chonnam National University Hospital Gwangju Korea.Division of Cardiology Departmen) Jeong Hyung Ki (Heart Center of Chonnam National University Hospital Gwangju Korea.) Lee Ki Hong (Heart Center of Chonnam National University Hospital Gwangju Korea.Division of Cardiology Departmen) Park Hyung Wook (Heart Center of Chonnam National University Hospital Gwangju Korea.Division of Cardiology Departmen) Cho Jeong Gwan (Heart Center of Chonnam National University Hospital Gwangju Korea.Division of Cardiology Departmen)
저널정보
대한의학회 Journal of Korean Medical Science Journal of Korean Medical Science Vol.36 No.11
발행연도
2021.1
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1 - 10 (10page)

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Background: The mechanism of Brugada syndrome (BrS) is still unclear, with different researchers favoring either the repolarization or depolarization hypothesis. Prolonged longitudinal activation time has been verified in only a small number of human right ventricles (RVs). The purpose of the present study was to demonstrate RV conduction delays in BrS. Methods: The RV outflow tract (RVOT)-to-RV apex (RVA) and RVA-to-RVOT conduction times were measured by endocardial stimulation and mapping in 7 patients with BrS and 14 controls. Results: Patients with BrS had a longer PR interval (180 ± 12.6 vs. 142 ± 6.7 ms, P = 0.016). The RVA-to-RVOT conduction time was longer in the patients with BrS than in controls (stimulation at 600 ms, 107 ± 9.9 vs. 73 ± 3.4 ms, P = 0.001; stimulation at 500 ms, 104 ± 12.3 vs. 74 ± 4.2 ms, P = 0.037; stimulation at 400 ms, 107 ±12.2 vs. 73 ± 5.1 ms, P = 0.014). The RVOT-to-RVA conduction time was longer in the patients with BrS than in controls (stimulation at 500 ms, 95 ± 10.3 vs. 62 ± 4.1 ms, P = 0.007; stimulation at 400 ms, 94 ±11.2 vs. 64 ± 4.6 ms, P = 0.027). The difference in longitudinal conduction time was not significant when isoproterenol was administered. Conclusion: The patients with BrS showed an RV longitudinal conduction delay obviously. These findings suggest that RV conduction delay might contribute to generate the BrS phenotype.

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