This study involves patients who have heart failure, ventricular dyssynchrony and also need an implantable defibrillator. This study involves patients with heart failure and ventricular dyssynchrony. These patients do not need a pacemaker or defibrillator. The InSync III study is evaluating the safety and efficacy of a heart failure therapy called cardiac resynchronization. This study involves patients with heart failure.
Enrollment is complete.
This study involves patients with heart failure. The Chronicle study evaluates the effectiveness of an implantable diagnostic monitor that measures pressure inside the heart. Limited by U.S. law to investigational use.