stay. ICDs may deliver shocks when they're not needed, so it's important to discuss the benefits and risks of these devices with a health care provider. Catheter ablation. If an ICD doesn't effectively and safely control Brugada syndrome symptoms, a procedure called radiofrequency catheter ablation may be an option. A long, flexible tube (catheter) is inserted through a blood vessel and threaded to the heart. The catheter delivers high energy that scars or destroys the heart tissue responsible for the irregular heart rhythm.