A histological study of the atria in patients with isolated rheumatic mitral regurgitation with and without atrial fibrillation

There is a high incidence of atrial fibrillation (AF) in patients with isolated rheumatic mitral regurgitation (MR). The histopathologic changes in the atria of patients with isolated rheumatic MR with and without AF are unknown.We aimed to determine the histological findings in patients with isolated severe rheumatic MR with and without AF.Patients with severe isolated rheumatic MR undergoing valve replacement surgeries underwent endocardial...