Catheter ablation is a procedure done in electrophysiology (EP) catheter lab. These procedures are generally performed if symptoms have not been adequately controlled with medicines. Catheter ablation procedures could be simple EP procedures and some are considered complex procedures. Some of these procedures may require general anesthesia administered to patients. In simple terms, these procedures will involve putting catheters through a vein from the upper thigh (femoral vein) and reach into the heart chambers and identify the arrhythmia causing sites in these chambers. Once they have been identified, treatment can be administered using these catheters in the form of ablation. Ablation could be performed either using radiofrequency or in some cases cryo ablation (freezing).