Atrial fibrillation (AF) is by far the most common tachyarrhythmia in humans. Prevalence of this rhythm disorder is 0.3-0.4% of adult population and increases with age from 2-4% in people over the age of 60 to 11.6 % in those over the age of 75 . In recent years, increasing number of patients are subjected to catheter ablation in an effort to cure AF. It has been shown that a successful AF ablation results in improved quality of life as well as left ventricular function when compared to other treatment modalities including pharmacologic treatment and pacemaker devices . Most ablation strategies today target electrical isolation of the pulmonary veins (PVs), which are believed to be the site of major foci triggering AF .
Credits: Pawan K. Arora MBBS; James C. Hansen MD; Rakesh Latchamsetty MD; Boaz Avitall MD PhD FHRS