Cardiac ablation is a procedure that can correct various heart rhythm problems (arrhythmias). It is usually done thru long, flexible tubes (catheters) inserted through a vein in your groin and threaded to your heart to correct the electrical abnormalities by destroying the abnormal electrical tissues by applying radiofrequency energy or by application of exteremely cold temperture called cryo ablation. Cardiac ablation works by scarring or destroying tissue in your heart that triggers an abnormal heart rhythm. In some cases, ablation prevents abnormal electrical signals from traveling through your heart and, thus, stops the arrhythmia.Cardiac ablation is sometimes done through open-heart surgery, but it's often done using catheters, making the procedure less invasive and shortening recovery times.