MedicineCardiologyInternal MedicineClinical CardiologyElectrophysiologyAtrial FibrillationCardiac ArrhythmiasAtrial Fibrillation Pathophysiology
trial fibrillation (AF) is the most common cardiac arrhythmia and effects nearly 1% of the population.Its prevalence increases with increasing age; it is relatively infrequent in those under 40 years old, but occurs in up to 5% of those over 80 years of age.