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Atrioventricular block can be used as a risk predictor of clinical atrial fibrillation

Xiao Zhao1, Chaofeng Sun2, Miaomiao Cao2

  • 1Health Science Center, Xi'an Jiaotong University, Xi'an, P.R.China.

Clinical Cardiology
|February 26, 2019
PubMed

Insights

Atrioventricular block (AVB) is linked to atrial fibrillation (AF). Specifically, second-degree AVB shows the strongest association, suggesting AVB may be a risk factor for AF development.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Internal Medicine

Background:

  • Atrial fibrillation (AF) is a prevalent cardiac arrhythmia, contributing significantly to hospital admissions.
  • Atrioventricular block (AVB) involves conduction abnormalities within the heart's electrical system.
  • The association between AVB and AF remains a subject of ongoing research and debate.

Purpose of the Study:

  • To investigate the correlation between atrioventricular block (AVB) and atrial fibrillation (AF).
  • To identify which specific type of AVB exhibits the strongest association with AF.

Main Methods:

  • A retrospective analysis of 1345 patients was conducted.
  • Patients were classified based on atrioventricular block (AVB) criteria.
  • A final cohort of 1243 patients (679 with AF, 564 without AF) was analyzed for comparative outcomes.

Main Results:

  • All three types of atrioventricular block (AVB) were found at significantly higher rates in the atrial fibrillation (AF) group compared to the non-AF group.
  • First-degree AVB showed a relative statistical risk of 1.927 for AF occurrence (P < 0.05).
  • Second-degree AVB had the highest incidence in the AF group (9.87%) with a significant statistical risk of 16.845 (P < 0.000), followed by third-degree AVB with a risk of 17.599 (P < 0.000).

Conclusions:

  • The prevalence of all three types of atrioventricular block (AVB) is significantly elevated in patients with atrial fibrillation (AF).
  • Second-degree AVB demonstrates the highest incidence rate among AVB types within the AF cohort.
  • Atrioventricular block (AVB) should be considered a potential risk factor for the development of atrial fibrillation (AF).
Abstract

Keywords:
I AVBII AVBIII AVBatrial fibrillationrisk indicator

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