| 摘要 |
A system for pacing a heart includes an implantable pulse generator configured to generate electrical impulses for stimulating contraction of cardiac tissue; first, second, third, and fourth leads configured to deliver the electrical impulses to activation sites within the cardiac tissue and to detect electrical activity of the activation sites; and a controller configured to control the delivery of the electrical impulses from each of the first, second, third, and fourth leads.
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