Abstract
The PR interval may be considered as a simple and easily obtainable predictor for adverse events, including atrial fibrillation (AF), pacemaker implantation, and mortality. Interestingly, both high and low extremes of the PR duration are associated with AF risk. However, the results regarding PR prolongation as a risk factor for AF are inconsistent. Some studies have analyzed the impact of P duration (as a part of the PR interval) and demonstrated that the P-duration contributes to the length of PR interval and adverse outcomes. The PR prolongation could be considered as a marker for cardiovascular degenerative aging caused by myocardial fibrosis and vascular inflammation. Furthermore, due to PR prolongation chronically raised intra-atrial pressure and consequential neuro-hormonal activation predispose systemic vascular endothelial dysfunction and explain the associations with adverse vascular events. In this review, we discuss the association between biomarkers with PR interval in AF.
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Author contributions
Katja Schumacher: Data collection, Drafting. Nikolaos Dagres; Critical revision of article. Gerhard Hindricks; Critical revision of article. Daniela Husser: Critical revision of article. Andreas Bollmann: Critical revision of article. Jelena Kornej: Concept/design, Data collection, analysis and interpretation, Drafting, Critical revision and Approving of article. Dr Jelena Kornej is responsible for the overall content as a guarantor.
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Schumacher, K., Dagres, N., Hindricks, G. et al. Characteristics of PR interval as predictor for atrial fibrillation: association with biomarkers and outcomes. Clin Res Cardiol 106, 767–775 (2017). https://doi.org/10.1007/s00392-017-1109-y
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DOI: https://doi.org/10.1007/s00392-017-1109-y