For more information call (888) LUHS-888.
Patients with heart failure that meet current indication for cardiac resynchronization therapy.
The purpose of this study is to test both the good and bad effects of using an investigational right atrium lead and CRT-D device during cardiac resynchronization therapy. The right atrium lead has a sensor that will automatically calculate the best time to pace the heart. The study will compare the responses to CRT-D therapy in patients receiving the automatic optimization in the device or by an echocardiogram.