Related Experiment Video
Updated: Jul 14, 2026

Imaging Ca2+ Signals in Small Pulmonary Veins at Physiological Intraluminal Pressures
Published on: March 21, 2025
Thoracic vein arrhythmias
1Division of Cardiovascular Medicine, Taipei Medical University-Wan-Fang Hospital and School of Medicine, Taipei Medical University, Taipei, Taiwan.
Abstract:
The thoracic veins are important foci for the genesis of ectopic atrial tachycardia and play a critical role in the pathophysiology of paroxysmal and permanent atrial fibrillation. The pulmonary veins have the highest arrhythmogenic activity and other venous structures (eg, superior vena cava, coronary sinus and ligament of Marshall) have also been shown arrhythmogenic potential. Thoracic veins contain cardiomyocytes with distinct electrical activities and complex anatomical structures. This review summaries the current understanding of the basic and clinical electrophysiology of thoracic vein arrhythmias.
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