Single-chamber ICDs Are Safer, But Some Patients Need More

Research suggests that the simpler devices are just as effective as the more complicated ICDs at preventing sudden cardiac death.

Published: July 17, 2013

If your heart requires an implantable cardioverter defibrillator (ICD) to prevent sudden cardiac death, as well as a pacemaker to help maintain a steady rhythm, youre likely to be recommended for a dual-chamber or dual-lead ICD. Such devices have leads going to the upper and lower chambers of the heart. If you dont need the assistance of a pacemaker, you may be advised to get a single-chamber or single-lead ICD. These devices are life-savers, but they can be complicated.