Objective: To explore the association between C-reactive protein (CRP) and atrial fibrillation. Methods: CRP was determined in 135 patients with atrial fibrillation and 111 controls by nephelometry of velocity. Nonparametric test was applied. Results: Atrial fibrillation group was comparable to control group in major CRP risk factors. CRP of atrial fibrillation group (median 1.44 mg/dl) was not different from that of control group (median 1.50 mg/dl, p>0.05). CRP of structural atrial fibrillation (median 1....