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Quadripolar CRT-D On Currently Approved Lead SystemS

The goal of this study is to evaluate the left ventricular (LV) pacing vectors available in Boston Scientific s (BSC) FDA-approved quadripolar (X4) CRT-Ds compared to the LV pacing vectors available in St. Jude Medical s (STJ) CRT-Ds using a quadripolar LV lead.



Recruitment Status

Past Studies