P1003New onset atrial fibrillation after stenting of the right coronary artery in patients with ischemic disease of the heart

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Abstract Background Atrial fibrillation (AF) is a major heart rhythm disorder among population older age. Percutaneous coronary intervention (PCI) with stenting of the right coronary artery may increase the new onset AF. Aim of the study was to estimate the new onset AF after stenting of the right coronary artery (RCA) in patients with stable ischemic disease of the heart and its effect on short-term prognosis. Methods 765 patients in whom performed PCI with stenting of the proximal and medial segment of RCA were enrolled in this study (aged 41-71 years; mean age 55.8 ± 12.0 years; male 51%). Short-term outcomes were analyzed in median 1.1-year follow-up due to the development of new onset AF. Results Among 765 patients, after PCI in RCA developed AF in 58 patients (7.5%) within follow-up. Among them, 40 patients (5.2%) with type 2 diabetes mellitus, 37 patients (4.8%) hypertension, 34 patients (4.4%) older than 60 years old, 30 patients (3.9%) myocardial infarction in history. Restoration of sinus rhythm (cardioversion rate) was in 86%. Majority of the patients in whom sinus rhythm was not recovered were older (11.0%) and diabetic mellitus (8.0%). The propensity-matched model showed that new onset AF was associated with an increased risk of bleeding during the procedure (OR 1.4; 95% confidence interval, 1.27-1.74) and heart failure (OR 1.27; 95% confidential interval, 1.16-1.45). Conclusion: New onset AF is common within short-term period after PCI in proximal and distal segments of the RCA and it was independently associated with post procedural complications and heart failure.