Atrial Fibrillation :
Atrial fibrillation refers to a condition where the heart's upper chambers, called atrium, are not in sync with the lower heart chambers and ventricles. The atrium beats irregularly and chaotically. It can also be occasional, persistent, long-standing, persistent, and permanent. Symptoms may include fast, fluttering, and pounding heartbeat, chest pain, dizziness, fatigue, lightheadedness, reduced ability to exercise, shortness of breath, and weakness. Factors that increase the risk of atrial fibrillation are high blood pressure, obesity, type 2 diabetes, chronic kidney disease, heart failure, coronary heart disease, congenital heart disease, lung diseases like chronic obstructive pulmonary disease, sleep apnea, and hyperthyroidism. Complications of atrial fibrillation are heart attack, stroke, bleeding in the brain, heart failure, and cardiac arrest.