Relationship between coarse F waves and thromboembolic events in patients with permanent atrial fibrillation

Background The coarse F waves on the 12-lead surface electrocardiogram (ECG) in patients with atrial fibrillation (AF) are known as atrial viability and contractility indicator. Our aim in this study was to investigate the effect of coarse F wave on thromboembolism in patients with permanent AF. Methods In our study, 328 patients with permanent AF were included. Routine laboratory, echocardiographic and electrocardiographic parameters were examined. Cerebrovascular event (CVE) or acute artery occlusion was considered a thromboembolic event. Results In our study, 46 (14.0%) of the patients were found to have thromboembolic events and 282 (86%) of them were found without thromboembolic events. In the group with thromboembolic event, the number of patients with hypertension (HT) (P < .001) and history of coronary artery disease (P = .003) and elderly patients (P < .001) was significantly higher and warfarin use was significantly lower (P = .025). In the group of patients without thromboembolic events, the number of patients with a coarse F wave in surface ECG was significantly lower (P = .001). Age (OR: 1.105, 95% CI: 1.066-1.145, P < .001), HT (OR: 2.831, 95% CI: 1.266-6.331, P = .011), and coarse F wave (OR: 0.290, 95% CI: 0.126- 0.670, P = .004) were determined as independent variables for thromboembolic events. Conclusion Coarse F wave in 12-lead surface ECG in patients with permanent AF may be associated with good prognosis.