Heart Rhythm O2 (Aug 2020)

Catheter ablation of atrial fibrillation in patients with diabetes mellitus

  • Allen Wang, MD,
  • Tracy Truong, MB,
  • Eric Black-Maier, MD,
  • Cynthia Green, PhD,
  • Kristen B. Campbell, PharmD,
  • Adam S. Barnett, MD,
  • Janice Febre, BSN, RN,
  • Zak Loring, MD, MHS,
  • Sana M. Al-Khatib, MD, MHS, FHRS,
  • Brett D. Atwater, MD,
  • James P. Daubert, MD, FHRS,
  • Camille Frazier-Mills, MD, MHS,
  • Donald D. Hegland, MD,
  • Kevin P. Jackson, MD,
  • Larry R. Jackson, MD,
  • Jason I. Koontz, MD, PhD,
  • Robert K. Lewis, MD, PhD,
  • Sean D. Pokorney, MD, MBA,
  • Albert Y. Sun, MD,
  • Kevin L. Thomas, MD,
  • Tristam D. Bahnson, MD, FHRS,
  • Jonathan P. Piccini, MD, MHS, FHRS

Journal volume & issue
Vol. 1, no. 3
pp. 180 – 188

Abstract

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Background: Diabetes mellitus (DM) is an independent risk factor for atrial fibrillation (AF). Few studies have compared clinical outcomes after catheter ablation between patients with and those without DM. Objective: The purpose of this study was to compare AF ablation outcomes in patients with and those without DM. Methods: We performed a retrospective analysis of 351 consecutive patients who underwent first-time AF ablation. Clinical outcomes included freedom from recurrent atrial arrhythmia, symptom burden (Mayo AF Symptom Inventory score), cardiovascular and all-cause hospitalizations, and periprocedural complications. Results: Patients with DM (n = 65) were older, had a higher body mass index, more persistent AF, more hypertension, and larger left atrial diameter (P <.05 for all). Median (Q1, Q3) total radiofrequency duration [64.0 (43.6, 81.4) minutes vs 54.3 (39.2, 76.4) minutes; P = .132] and periprocedural complications (P = .868) did not differ between patients with and those without DM. After a median follow-up of 29.5 months, arrhythmia recurrence was significantly higher in the DM group compared to the no-DM group after adjustment for baseline differences (adjusted hazard ratio [HR] 2.24; 95% confidence [CI] 1.42–3.55; P = .001). There was a nonsignificant trend toward higher AF recurrence with worse glycemic levels (HR 1.29; 95% CI 0.99–1.69; P = .064). Conclusion: Although safety outcomes associated with AF ablation were similar between patients with and those without DM, arrhythmia-free survival was significantly lower among patients with DM. Poor glycemic control seems to an important risk factor for AF recurrence.

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