Abstract

Background The current standard of care for acute atrial fibrillation (AF) focuses primarily on immediate restoration of sinus rhythm by cardioversion, although AF often terminates spontaneously.Objective To identify determinants of early spontaneous conversion (SCV) in patients presenting at the emergency department (ED) because of AF.Methods An observational study was performed of patients who visited the ED with documented AF between July 2014 and December 2016. The clinical characteristics and demographics of patients with and without SCV were compared.Results We enrolled 943 patients (age 69 +/- 12 years, 47% female). SCV occurred within 3 h of presentation in 158 patients (16.8%). Logistic regression analysis showed that duration of AF <24 h [odds ratio (OR) 7.7, 95% confidence interval (CI) 3.5-17.2, p < 0.001], left atrial volume index <42 ml/m(2) (OR 1.8, 95% CI 1.2-2.8, p = 0.010), symptoms of near-collapse at presentation (OR 2.4, 95% CI 1.2-5.1, p = 0.018), a lower body mass index (BMI) (OR 0.9, 95% CI 0.91-0.99, p = 0.028), a longer QTc time during AF (OR 1.01, 95% CI 1.0-1.02, p = 0.002) and first-detected AF (OR 2.5, 95% CI 1.6-3.9, p < 0.001) were independent determinants of early SCV.Conclusion Early spontaneous conversion of acute AF occurs in almost one-sixth of admitted patients during a short initial observation in the ED. Spontaneous conversion is most likely to occur in patients with first-onset, short-duration AF episodes, lower BMI, and normal left atrial size.
Original languageEnglish
Pages (from-to)255-261
Number of pages7
JournalNetherlands Heart Journal
Volume29
Issue number5
Early online date6 Jan 2021
DOIs
Publication statusPublished - May 2021

Keywords

  • acute atrial fibrillation
  • cardioversion
  • determinants
  • obesity
  • propafenone
  • risk
  • spontaneous conversion
  • treatment
  • wait-and-see approach
  • Acute atrial fibrillation
  • PROPAFENONE
  • CARDIOVERSION
  • Cardioversion
  • RISK
  • Wait-and-see approach
  • OBESITY
  • Treatment
  • Determinants
  • Spontaneous conversion

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