Morphology of the thoracic veins and left atrium in paroxysmal atrial fibrillation initiated by superior caval vein ectopy

Bien Hsien Huang, Mei Han Wu, Hsuan Ming Tsao, Ching Tai Tai, Kun Tai Lee, Yenn Jiang Lin, Ming Hsiung Hsieh, Shih Huang Lee, Yi Jen Chen, Jen Yuan Kuo, Shih Ann Chen

研究成果: 雜誌貢獻文章

22 引文 斯高帕斯(Scopus)

摘要

Introduction: The structural changes of the superior caval vein, pulmonary veins, and left atrium in atrial fibrillation initiated by superior caval vein ectopy have not been reported. Methods and Results: Nine patients with atrial fibrillation initiated by superior caval vein ectopic beats (male = 5, 54 ± 10 years) and 15 control (n = 15, male = 10, 52 ± 8 years) without any cardiac arrhythmias were included in this study. Using gadolinium-enhanced magnetic resonant angiography with three-dimensional reconstruction, the parameters of the superior caval vein morphology (length, various diameters, area, eccentricity, and volume) were measured. The morphological parameters of the four pulmonary veins (diameter, ostial area, and eccentricity) were also measured at the pulmonary vein-left atrial junction in an oblique sagittal section from the multiple-plane reconstruction images. The left atrial diameters and volume were measured. The different morphological parameters were compared between the two groups. The patients with atrial fibrillation initiated by superior caval vein ectopic beats exhibited a more eccentric structure of the second part of the superior caval vein as compared to the control group. All the ectopic beats initiating atrial fibrillation were located in the second part of the superior caval vein. Furthermore, the patients with atrial fibrillation initiated by superior caval vein ectopic beats had a larger superior caval vein volume, left atrial volume, and pulmonary vein size, and more eccentric pulmonary vein ostia than the controls. Conclusion: Structural changes of the superior caval vein were demonstrated in the patients with atrial fibrillation initiated by superior caval vein ectopic beats. These findings might explain the arrhythmogenic mechanism of atrial fibrillation initiated by superior caval vein ectopy.

原文英語
頁(從 - 到)411-417
頁數7
期刊Journal of Cardiovascular Electrophysiology
16
發行號4
DOIs
出版狀態已發佈 - 四月 2005
對外發佈Yes

    指紋

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Physiology
  • Physiology (medical)

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