Atrial Fibrillation is commonly associated with, Myocardial infarction, Complete metabolic panel, Congestive Cardiac Failure, Mitral stenosis, hyperthyroidism, Pulmonary embolism, Diabetes mellitus, Hypertension, obesity. Sleep apnea acute Atrial Fibrillation is an emergency because it leads to Syncope and hypotension which increases the risk of Stroke.

First control ventricular rate then rhythm (RFA, cardioversion, Maze surgery).