Inflammation in lone atrial fibrillation

Area of Science:

• Cardiology
• Inflammation Research
• Biomarkers

Background:

• Lone atrial fibrillation (AF) is a common cardiac arrhythmia.
• Inflammation is increasingly recognized as a contributing factor in cardiovascular diseases.
• C-reactive protein (CRP) is a key marker of systemic inflammation.

Purpose of the Study:

• To investigate the association between lone atrial fibrillation and inflammation.
• To determine if C-reactive protein (CRP) levels correlate with the presence and type of atrial fibrillation.

Main Methods:

• A cohort of 411 subjects, including 333 patients with lone atrial fibrillation and 78 controls, was analyzed.
• C-reactive protein (CRP) levels were measured.
• Echocardiography was performed, and electrocardiograph monitoring identified cardiac rhythm during blood sampling.

Main Results:

• Lone atrial fibrillation patients exhibited higher CRP levels compared to controls.
• CRP levels were significantly higher in persistent AF than paroxysmal AF, and in the presence versus absence of AF during paroxysmal AF.
• Atrial fibrillation rhythm was the sole independent predictor of elevated CRP in lone AF patients after adjusting for covariates.

Conclusions:

• Elevated CRP levels in lone atrial fibrillation are associated with the active presence of the atrial fibrillation rhythm.
• The duration or history of atrial fibrillation does not appear to influence CRP levels.
• Inflammation, as indicated by CRP, plays a role in lone atrial fibrillation, particularly during episodes.