An endometrial ablation is a surgical procedure that is used to treat heavy periods. It is performed by permanently destroying the inner most layer of the uterus, the layer that is shed with each period. By destroying this lining, periods can become lighter or stop altogether. Ablations can be completed via many techniques including radiofrequency, freezing, heated fluid, heated fluid within a balloon, microwave energy or electrosurgery. Depending on the technique and the patient, some ablations are done in a physician’s office and some are done in the operating room under general anesthesia.