Effect of Aggressive Blood Pressure Control on the Recurrence of Atrial Fibrillation After Catheter Ablation Academic Article uri icon

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abstract

  • BACKGROUND: Radiofrequency catheter ablation for atrial fibrillation has become an important therapy for AF; however, recurrence rates remain high. We proposed to determine whether aggressive blood pressure (BP) lowering prevents recurrent atrial fibrillation (AF) after catheter ablation in patients with AF and a high symptom burden. METHODS: We randomly assigned 184 patients with AF and a BP >130/80 mm Hg to aggressive BP (target <120/80 mm Hg) or standard BP (target <140/90 mm Hg) treatment before their scheduled AF catheter ablation. The primary outcome was symptomatic recurrence of AF/atrial tachycardia/atrial flutter lasting >30 seconds, determined 3 months beyond catheter ablation by a blinded end-point evaluation. RESULTS: The median follow-up was 14 months. At 6 months, the mean systolic BP was 123.2±13.2 mm Hg in the aggressive BP treatment group versus 135.4±15.7 mm Hg (P<0.001) in the standard treatment group. The primary outcome occurred in 106 patients, 54 (61.4%) in the aggressive BP treatment group compared with 52 (61.2%) in the standard treatment group (hazard ratio=0.94; 95% confidence interval, 0.65-1.38; P=0.763). In the prespecified subgroup analysis of the influence of age, patients ≥61 years of age had a lower primary outcome event rate with aggressive BP (hazard ratio=0.58; 95% confidence interval, 0.34-0.97; P=0.013). There was a higher rate of hypotension requiring medication adjustment in the aggressive BP group (26% versus 0%). CONCLUSIONS: In this study, this duration of aggressive BP treatment did not reduce atrial arrhythmia recurrence after catheter ablation for AF but resulted in more hypotension. CLINICAL TRIAL REGISTRATION: URL: http://www.clinicaltrials.gov. Unique identifier: NCT00438113.

authors

  • Parkash, Ratika
  • Wells, George A
  • Sapp, John L
  • Healey, Jeffrey Sean
  • Tardif, Jean-Claude
  • Greiss, Isabelle
  • Rivard, Lena
  • Roux, Jean-Francois
  • Gula, Lorne
  • Nault, Isabelle
  • Novak, Paul
  • Birnie, David
  • Ha, Andrew
  • Wilton, Stephen B
  • Mangat, Iqwal
  • Gray, Christopher
  • Gardner, Martin
  • Tang, Anthony SL

publication date

  • May 9, 2017