What is arrhythmia? Arrhythmia is an abnormal heart rhythm, this includes irregular heart rates and skipped (ectopic) beats. Atrial fibrillation Atrial fibrillation (AF) is an abnormal heart rhythm within the upper pumping chambers of the heart (left and right atria) which disrupts the heart’s overall pumping sequence. The most common symptom is fast, irregular heart … Continue reading Catheter Ablation