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    • 9. 发明授权
    • Capture threshold measurement for selection of pacing vector
    • 拍摄阈值测量用于选择起搏矢量
    • US08718770B2
    • 2014-05-06
    • US12909057
    • 2010-10-21
    • Wade M. DemmerTodd J. Sheldon
    • Wade M. DemmerTodd J. Sheldon
    • A61N1/08
    • A61N1/3712A61N1/3686
    • Various techniques for selecting a pacing vector based on pacing capture thresholds are described. One example method described includes for each of a plurality of vectors, iteratively delivering at least one pacing stimulus at each of a plurality of magnitudes within a predetermined range of magnitudes to a first chamber, determining if a depolarization occurred in a second chamber of the heart within a predetermined threshold time interval after the pacing stimulus that is less than an interval, identifying a pacing stimulus for which a depolarization in the second chamber does not occur within the predetermined threshold time interval, determining a capture threshold magnitude for the vector based on the magnitude of the pacing pulse for which a depolarization in the second chamber does not occur within the predetermined threshold time interval, and recording the capture threshold magnitudes.
    • 描述了基于起搏捕获阈值来选择起搏向量的各种技术。 所描述的一个示例性方法包括针对多个向量中的每一个,在预定范围内的多个量级中的每一个向第一室迭代递送至少一个起搏刺激,确定是否在心脏的第二腔室中发生去极化 在所述起搏刺激小于间隔之后的预定阈值时间间隔内,识别在所述预定阈值时间间隔内不发生所述第二腔室中去极化的起搏刺激,基于所述步骤确定所述矢量的捕获阈值量值 在预定的阈值时间间隔内在第二腔室中去极化的起搏脉冲的幅值,并记录捕获阈值量值。