A 41-year-old female presented with breathlessness, palpitations, and chest pain for 3 days. She has a history of valvular heart disease surgery 14 years ago. On examination, she was dyspneic, tachycardic, and had pedal edema. ECG showed atrial fibrillation with a rate of 160 beats/minute. Echocardiogram revealed moderate mitral stenosis and mild tricuspid regurgitation with enlarged left atrium and moderate mitral annular calcification. The patient was diagnosed with atrial fibrillation likely due to rheumatic heart disease.