This is a prospective, multi-center, IDE clinical study designed to evaluate the safety of the Model 1457Q Quartet LV lead.
A minimum of 94 and a maximum of 430 subjects will be enrolled in this study at up to 40 centers worldwide.
All subjects successfully implanted with a Quartet 1457Q lead will be followed every 6 months post implant until Pre Market Approval (PMA) is obtained or the study is closed.
