Model 4396 Left Ventricular (LV) Lead Chronic Performance Study

The purpose of this study is to evaluate long-term performance of the 4396 LV Lead. This evaluation is based on the number of lead-related complications occurring during the study compared to the number of leads enrolled in the study. The leads will be followed for 5 years after implant. This study is required by FDA as a condition of approval of the Model 4396 LV Lead. This study is conducted within Medtronic's post-market surveillance platform.