Gender Differences of Electrophysiological Characteristics in Focal Atrial Tachycardia

Yu Feng Hu, Jin Long Huang, Tsu Juey Wu, Satoshi Higa, Chun Ming Shih, Ching Tai Tai, Yenn Jiang Lin, Shih Lin Chang, Li Wei Lo, Tuan Ta-Chuan, Chien Jong Chang, Wen Chin Tsai, Pi Chang Lee, Hsuan Ming Tsao, Sugako Ishigaki, Asuka Oyakawa, Shih Ann Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Gender differences of supraventricular tachycardias such as atrioventricular nodal re-entry, atrioventricular re-entry, and atrial fibrillation have been reported. There is little evidence of the effect of gender on focal atrial tachycardia (FAT). The study consisted of 298 patients who were referred to this institution for radiofrequency catheter ablation of FAT from October 1992 to April 2008 and included 156 men (52%) and 142 women (48%). Men were significantly older than women (57.9 ± 18.2 vs 47.2 ± 19.0 years old, p <0.001). Women had more associated arrhythmias (17.0% vs 28.9%, p = 0.01), mostly due to an increased incidence of atrioventricular nodal re-entrant tachycardia. Men had more cardiovascular co-morbidities (19.9% vs 9.9%, p = 0.02), a mechanism of increased automaticity (19.1% vs 8.1%, p = 0.01), and nonparoxysmal tachycardia (14.7% vs 4.4%, p = 0.01). No gender differences were noted among FAT number, left atrial involvement, shortest tachycardia cycle, success rate of catheter ablation, or recurrence rate of FAT. Mean duration of follow-up was 63.2 ± 47.5 months. Premenopausal women had a lesser cardiovascular co-morbidity (15.3% vs 4.3%, p = 0.04) and a greater incidence of a mechanism of increased automaticity (13.4% vs 2.9%, p = 0.03). In conclusion, gender differences in electrophysiologic characteristics were noted in FAT.

Original languageEnglish
Pages (from-to)97-100
Number of pages4
JournalAmerican Journal of Cardiology
Issue number1
StatePublished - 1 Jul 2009


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