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    • 66. 发明授权
    • Devices, systems and methods to perform arrhythmia discrimination based on R-R interval stability corresponding to a plurality of ventricular regions
    • 基于对应于多个心室区域的R-R间期稳定性执行心律失常鉴别的装置,系统和方法
    • US09002453B2
    • 2015-04-07
    • US13194732
    • 2011-07-29
    • Allen J. KeelKyungmoo RyuStuart Rosenberg
    • Allen J. KeelKyungmoo RyuStuart Rosenberg
    • A61N1/00A61B5/04A61B5/042A61B5/0452A61B5/0464A61N1/362A61N1/368A61B5/0456
    • A61B5/0422A61B5/0452A61B5/0456A61B5/0464A61N1/3627A61N1/3684A61N1/3686
    • Described herein are implantable systems and devices, and methods for use therewith, that can be used to perform arrhythmia discrimination. A plurality of different sensing vectors are used to obtain a plurality of different IEGMs, each of which is indicative of cardiac electrical activity at a different ventricular region. The plurality of different IEGMs can include, e.g., an IEGM indicative of cardiac electrical activity at a first region of the patient's left ventricular (LV) chamber and an IEGM indicative of cardiac electrical activity at a second region of the patient's LV chamber. Additionally, the plurality of different IEGMs can further include an IEGM indicative of cardiac electrical activity at a region of a patient's right ventricular (RV) chamber. For each of the IEGMs, there is a determination of a corresponding localized R-R interval stability metric indicative of the R-R interval stability at the corresponding ventricular region. This can include, e.g., determining, for each of the IEGMs, a plurality of R-R intervals corresponding to a plurality of consecutive cardiac cycles of the IEGM. For each IEGM, a measure of variation (e.g., standard deviation, range or variance, but not limited thereto) can then be determined for the plurality of R-R intervals to thereby determine the localized R-R interval stability metric for the IEGM. Arrhythmia discrimination is then performed using the plurality of determined localized R-R interval stability metrics.
    • 本文描述了可用于执行心律失常鉴别的可植入系统和装置及其使用方法。 使用多个不同的感测向量来获得多个不同的IEGM,每个IEGM指示在不同心室区域处的心脏电活动。 多个不同的IEGM可以包括例如指示患者左心室(LV)室的第一区域处的心脏电活动的IEGM和指示患者LV室的第二区域处的心脏电活动的IEGM。 另外,多个不同的IEGM还可以包括指示患者右心室(RV)室的区域处的心脏电活动的IEGM。 对于每个IEGM,存在确定相应的局部R-R间期稳定性度量,其指示相应心室区域处的R-R间期稳定性。 这可以包括例如为每个IEGM确定对应于IEGM的多个连续心脏周期的多个R-R间隔。 对于每个IEGM,然后可以为多个R-R间隔确定变化量(例如,标准偏差,范围或方差,但不限于此),从而确定IEGM的局部R-R间隔稳定性度量。 然后使用多个确定的局部R-R间期稳定性度量进行心律失常鉴别。