DENVER — Electrophysiology leads were a big topic at this year's meeting of the Heart Rhythm Society (HRS; Washington), and a session held on the last day reviewed the evidence in support of removing ICD leads that are the subject of an advisory when replacing the generator. Suneet Mittal, MD, of Columbia University (New York) seemed at several points in his presentation to argue in favor of removing any leads with a troubled safety history, but he concluded that more data are needed to make the call, even when a physician is already operating on the patient to replace the defibrillator unit.