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    • 14. 发明申请
    • PRESSURE MEASUREMENT-BASED ISCHEMIA DETECTION
    • 基于压力测量的ISCHEMIA检测
    • US20080287818A1
    • 2008-11-20
    • US11737650
    • 2007-04-19
    • Anne M. ShelchukDan E. Gutfinger
    • Anne M. ShelchukDan E. Gutfinger
    • A61B5/02
    • A61B5/0456A61B5/0215A61N1/365A61N1/36564A61N1/36585A61N1/3684
    • In some aspects ischemia is indicated based on cardiac pressure measurements. For example, ischemia may be indicated based on an increase in an intraventricular electromechanical delay where mechanical contractions are detected by measuring pressure in a cardiac chamber. Ischemia detection also may involve obtaining timing information relating to a mechanical contraction of at least one ventricle to identify an intraventricular dyssynchrony. In this case, pressure measurements may be used to identify the timing of the mechanical contraction. Ischemia may be indicated based on a change in a time interval associated with a systolic interval of a ventricle. Ischemia also may be indicated based on an intracardiac electrogram-based indication of ischemia in conjunction with an increase in mean left atrial pressure and/or an increase in the size of a v-wave.
    • 在一些方面,基于心脏压力测量指示缺血。 例如,可以基于通过测量心室中的压力来检测机械收缩的心室内机电延迟的增加来指示缺血。 缺血检测还可能涉及获得与至少一个心室的机械收缩相关的定时信息,以识别心室内不同步。 在这种情况下,可以使用压力测量来识别机械收缩的时间。 可以基于与心室的收缩期间隔相关联的时间间隔的变化来指示缺血。 还可以基于基于心内电描记图的缺血指示以及平均左心房压力的增加和/或v波的大小的增加来指示缺血。