title: Atrial substrate properties and outcome of catheter ablation in patients with paroxysmal atrial fibrillation associated with diabetes mellitus or impaired fasting glucose.
abstract: Diabetes mellitus has been reported to be an independent risk factor of atrial fibrillation (AF). The present study investigated the atrial substrate properties and clinical outcome of catheter ablation in patients with paroxysmal AF and abnormal glucose metabolism. A total of 228 patients with paroxysmal AF who had undergone catheter ablation for the first time were enrolled. An abnormal glucose metabolism (n = 65) was defined as diabetes mellitus or an impaired fasting glucose. We analyzed the clinical and electrophysiologic characteristics in, and the clinical outcome of, patients with AF with and without an abnormal glucose metabolism. The right atrial (107.2 ± 15.4 vs 96.0 ± 16.5 ms, p < 0.001) and left atrial (108.4 ± 22.3 vs 94.0 ± 17.5 ms, p < 0.001) total activation times were significantly longer in the patients with AF and an abnormal glucose metabolism than in those without an abnormal metabolism. Furthermore, the right atrial (1.46 ± 0.61 vs 2.00 ± 0.70 mV, p < 0.001) and left atrial (1.48 ± 0.74 vs 2.05 ± 0.78 mV, p < 0.001) bipolar voltages were significantly lower in those with AF and an abnormal glucose metabolism than in those without. The AF recurrence rate was also greater in the patients with an abnormal glucose metabolism (18.5% vs 8.0%, p = 0.022) than in those without. The follow-up duration was 18.8 ± 6.4 months. In conclusion, an abnormal glucose metabolism affects the biatrial substrate properties with an intra-atrial conduction delay, decreased voltage, and greater recurrence rate after catheter ablation.
authors.affiliation: Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
authors.forename: Tze-Fan
authors.initials: TF
authors.lastname: Chao
authors.forename: Kazuyoshi
authors.initials: K
authors.lastname: Suenari
authors.forename: Shih-Lin
authors.initials: SL
authors.lastname: Chang
authors.forename: Yenn-Jiang
authors.initials: YJ
authors.lastname: Lin
authors.forename: Li-Wei
authors.initials: LW
authors.lastname: Lo
authors.forename: Yu-Feng
authors.initials: YF
authors.lastname: Hu
authors.forename: Ta-Chuan
authors.initials: TC
authors.lastname: Tuan
authors.forename: Ching-Tai
authors.initials: CT
authors.lastname: Tai
authors.forename: Hsuan-Ming
authors.initials: HM
authors.lastname: Tsao
authors.forename: Cheng-Hung
authors.initials: CH
authors.lastname: Li
authors.forename: Kuo-Chang
authors.initials: KC
authors.lastname: Ueng
authors.forename: Tsu-Juey
authors.initials: TJ
authors.lastname: Wu
authors.forename: Shih-Ann
authors.initials: SA
authors.lastname: Chen
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001281:Atrial Fibrillation / Q000150:complications / Q000503:physiopathology* / Q000601:surgery; D001786:Blood Glucose / Q000378:metabolism*; D018780:Body Surface Potential Mapping / Q000379:methods*; D017115:Catheter Ablation; D003920:Diabetes Mellitus / Q000097:blood*; D005215:Fasting / Q000097:blood; D005260:Female; D005500:Follow-Up Studies; D018149:Glucose Intolerance / Q000097:blood* / Q000150:complications; D006325:Heart Atria / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D012008:Recurrence; D013614:Tachycardia, Paroxysmal / Q000150:complications / Q000503:physiopathology* / Q000601:surgery; D055815:Young Adult
chemical_list: D001786:Blood Glucose