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Tuesday, August 22, 2017

Atrial fibrillation is a common type of cardiac rhythm disturbance occurring in 1-2% of the general population and 5-15% of patients over 75 years of age. It is the most common sustained cardiac arrhythmia. Atrial fibrillation is a complex arrhythmia characterized by both abnormal automatic firing and the presence of multiple interacting re-entry circuits looping around the atria. Any conditions causing raised atrial pressure, increased atrial muscle mass, atrial fibrosis, inflammation and infiltration of the atrium can cause atrial fibrillation.