It is a surgery used to treat abnormal heart rhythms or arrhythmias. Cardiac ablation is a procedure that is used to scar small areas in your heart which can results in irregular and abnormal electric heart beats. Endometrial ablation can be done by Laser beam (laser thermal ablation).Heat (thermal ablation), and Radiofrequency. An ablation is done using the same technique as an electrophysiology (EP) study and is often carried out at the same time. During the procedure, small wires called electrodes are placed inside the heart to measure hearts electrical activity. These electrodes may also be used to destroy the bad areas of the heart.