Yuya Takahashi, Takanori Yamaguchi, Toyokazu Otsubo, Kana Nakashima, Kodai Shinzato, Ryosuke Osako, Shigeki Shichida, Yuki Kawano, Akira Fukui, Atsushi Kawaguchi, Shinichi Aishima, Tsunenori Saito, Naohiko Takahashi, Koichi Node
BACKGROUND AND AIMS: This study aimed to histologically validate atrial structural remodelling associated with atrial fibrillation. METHODS AND RESULTS: Patients undergoing atrial fibrillation ablation and endomyocardial atrial biopsy were included (n = 230; 67 ± 12 years old; 69 women). Electroanatomic mapping was performed during right atrial pacing. Voltage at the biopsy site (Vbiopsy), global left atrial voltage (VGLA), and the proportion of points with fractionated electrograms defined as ≥5 deflections in each electrogram (%Fractionated EGM) were evaluated...
June 23, 2023: European Heart Journal