Coronary artery dominance may predict future risk of atrial fibrillation

Abstract

Introduction. Most patients have a right-dominant vascularization of the heart 85%, and 8% have left-dominant vascularization and 7% demonstrate variation of codominant. The population with left-dominant circulation is at higher risk for arrhythmic complications after common cardiac procedures. Purpose of the work: Identification and analysis of the correlation between the type of dominance of the coronary arteries: right, left or codominant and the frequency of atrial fibrillation in these patients. Materials and methods. The study was conducted on 96 patients: of which (61) 63.5% researched by Holter ECG and coronary angiography, (23) 23.95% CT and CT angio, but also (12) 12.5% cadavers (12 mature) in which we analyzed the heart and lung complex (formalized) from the collection of the Department of Anatomy and Clinical Anatomy of the "Nicolae Testemițanu" USMF. Results. In the study, right coronary dominance was found in (68) 70.83% of cases, left in (26) 24.96% of cases, and in (2) 2.08% of cases – codominant. The available data indicate that in the general population, most people have right coronary dominance. Of the 61 cases (coronary angiography – Holter ECG), (39) 63.9% – right dominance, (22) 36.1% – left dominance. During 24-hour Holter monitoring ECG, atrial fibrillation was detected in (7) 11.4% patients with right coronary dominance, while in patients with left coronary dominance it was detected in (9) 14.75%, patients. Conclusion(s). Of the 61 cases, atrial fibrillation is more common in people with left coronary dominance – (9) 14.75%, compared to those with right coronary dominance – (7) 11,4%.