Gender differences of electrophysiological characteristics in focal atrial tachycardia.
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.
Hu
Yu-Feng
YF
Taipei Veterans General Hospital, National Yang-Ming University, Taipei, Taiwan.
Huang
Jin-Long
JL
Wu
Tsu-Juey
TJ
Higa
Satoshi
S
Shih
Chun-Ming
CM
Tai
Ching-Tai
CT
Lin
Yenn-Jiang
YJ
Chang
Shih-Lin
SL
Lo
Li-Wei
LW
Ta-Chuan
Tuan
T
Chang
Chien-Jong
CJ
Tsai
Wen-Chin
WC
Lee
Pi-Chang
PC
Tsao
Hsuan-Ming
HM
Ishigaki
Sugako
S
Oyakawa
Asuka
A
Chen
Shih-Ann
SA
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001283:Atrioventricular Node / Q000503:physiopathology; D017115:Catheter Ablation; D015331:Cohort Studies; D022062:Electrophysiologic Techniques, Cardiac; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012307:Risk Factors; D012737:Sex Factors; D013617:Tachycardia, Supraventricular / Q000175:diagnosis / Q000453:epidemiology* / Q000503:physiopathology / Q000601:surgery; D013624:Taiwan / Q000453:epidemiology; D055815:Young Adult