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    • 9. 发明申请
    • Retrograde atrial sensing for identifying sub-threshold atrial pacing
    • 逆行心房感应识别亚阈值心房起搏
    • US20060271122A1
    • 2006-11-30
    • US11136988
    • 2005-05-25
    • Derek BohnRajesh Gandhi
    • Derek BohnRajesh Gandhi
    • A61N1/362
    • A61N1/3712A61N1/368A61N1/3714
    • Methods and systems for delivering a pacing pulse to an atrium during a cardiac cycle. A retrograde P-wave may be identified during the cardiac cycle, indicative of sub-threshold atrial pacing. Delivery of the pacing pulse to the atrium may be adjusted in a subsequent cardiac cycle in response to identifying the retrograde P-wave. Adjusting delivery of the pacing pulse may involve initiating an atrial capture threshold test, temporarily increasing one or both of the pacing pulse amplitude and pulse width, and/or re-evaluating one or both of the pacing pulse amplitude and pulse width. Adjusting delivery of the pacing pulse may also involve altering the timing of a scheduled atrial capture threshold test. During an atrial capture threshold test, a retrograde P-wave template may be generated in response to atrial non-capture sensed during the atrial capture threshold test, and used to identify subsequent retrograde P-waves.
    • 在心动周期期间将起搏脉搏递送至心房的方法和系统。 可以在心动周期期间鉴定逆行P波,表示亚阈值心房起搏。 响应于识别逆行P波,可以在随后的心动周期中调整起搏脉冲到心房的输送。 调节起搏脉冲的传送可以包括启动心房捕获阈值测试,暂时增加起搏脉冲幅度和脉冲宽度中的一个或两个,和/或重新评估起搏脉冲幅度和脉冲宽度中的一个或两个。 调整起搏脉冲的传递也可能涉及改变调度的心房捕获阈值测试的时序。 在心房捕获阈值测试期间,可以响应于在心房捕获阈值测试期间感测到的心房非捕获而产生逆行P波模板,并且用于识别随后的逆行P波。