In this video, Dr. K K Aggarwal, President Heart Care Foundation of India and Group Editor in Chief MEDtalks, will discuss about atrial fibrillation in underlying rheumatic heart disease. He says that atrial fibrillation is very common in rheumatic heart disease patients. He will further discuss the other conditions in which it can be present. Atrial fibrillation in present in 70% of mitral stenosis, mitral regurgitation and tricuspid regurgitation patients. In isolated mitral stenosis, it is present in 29% of cases and in mitral regurgitation, it is present in 16% of the cases.