Treatment of Chronic Atrial Fibrillation During Surgery for Rheumatic Mitral Valve Disease

by Flavio Donizete Gonçalves, Valdir Gonçalves Leite Junior, Vanusa Gonçalves Leite, Marcelo Alves Maia, Otoni Moreira Gomes, Melchior Luiz Lima, Evandro César Vidal Osterne, Elias Kallás