Atrial fibrillation (AFib) is a condition that affects around 2.7 million Americans. It’s a type of irregular heartbeat, often too fast, that can cause symptoms like fatigue, shortness of breath, dizziness, and palpitations. Left untreated, AFib can increase the risk of stroke, heart failure, and even dementia. Medications don’t always work for this condition, so doctors may recommend a procedure called catheter ablation to help restore a normal heart rhythm.